The word synonyms for criminal can describe a person who has committed a crime, an action that violates the law, or something morally or legally wrong. The best synonym depends on the meaning, context, and level of seriousness. Words such as offender, lawbreaker, culprit, felon, delinquent, and convict are related, but they are not always interchangeable.
Quick Answer
Common synonyms for criminal include offender, lawbreaker, culprit, felon, convict, delinquent, wrongdoer, perpetrator, outlaw, crook, and thief. However, each word has a slightly different meaning. For example, offender is broad and neutral, while felon usually refers to someone convicted of a serious crime.
Quick Synonym List
Offender
Lawbreaker
Culprit
Felon
Convict
Delinquent
Wrongdoer
Perpetrator
Outlaw
Crook
Thief
Robber
Burglar
Fugitive
Gangster
Hoodlum
Villain
Criminal offender
Malefactor
Miscreant
What Does “Criminal” Mean?
Criminal has several related uses.
As a noun, it usually means a person who has committed or been convicted of a crime.
The police arrested the criminal.
As an adjective, it describes something involving or relating to crime.
The investigation uncovered criminal activity.
It can also describe something as extremely wrong or unacceptable, especially in informal or figurative language.
It would be criminal to waste such an opportunity.
Because of these different uses, not every synonym works in every sentence.
Closest Synonyms for Criminal
Offender
Offender is one of the broadest and most neutral alternatives. It refers to someone who has violated a law, rule, or regulation.
The offender was ordered to pay a fine.
Best for: legal, official, and general contexts.
Lawbreaker
Lawbreaker directly describes someone who breaks the law.
The new law imposes stricter penalties on repeat lawbreakers.
Best for: general explanations and journalism.
Culprit
A culprit is the person responsible for a particular crime, mistake, or wrongdoing.
Police identified the culprit after reviewing the footage.
Best for: situations where responsibility for a specific incident is being discussed.
Felon
A felon generally means someone convicted of a felony, a serious crime in jurisdictions that use the felony classification.
The convicted felon served several years in prison.
Best for: specific legal contexts.
Convict
A convict is someone who has been convicted of a crime. It does not simply mean anyone accused of a crime.
The former convict later became a community volunteer.
Best for: people who have already been convicted.
Perpetrator
A perpetrator is the person who actually committed a crime or harmful act.
Investigators are still searching for the perpetrator.
Best for: crime reporting and formal writing.
Wrongdoer
A wrongdoer is someone who has done something wrong. The wrongdoing does not necessarily have to be a criminal offense.
The company was ordered to compensate victims of the wrongdoer’s actions.
Best for: broader moral, legal, or ethical contexts.
Criminal by Meaning and Context
Criminal as a Person Who Breaks the Law
When criminal means a person who commits a crime, useful alternatives include:
Offender
Lawbreaker
Culprit
Perpetrator
Wrongdoer
Felon
Convict
Outlaw
The choice depends on whether the person is accused, responsible, or legally convicted.
Criminal as Someone Convicted of a Serious Crime
When the person has been legally convicted, consider:
Felon
Convict
Offender
Convicted offender
The court sentenced the convicted offender to five years in prison.
Criminal as Someone Responsible for a Specific Crime
Use:
Culprit
Perpetrator
Offender
Investigators eventually found the perpetrator.
These terms are especially useful when discussing one particular incident.
Criminal as an Informal Description
In casual speech, people may use:
Crook
Hoodlum
Gangster
Outlaw
Thug
These words can sound informal, emotional, or judgmental, so they are usually inappropriate in formal legal writing.
Criminal as an Adjective
When criminal means related to crime, alternatives can include:
Illegal
Unlawful
Illicit
Felonious
Lawless
The company was investigated for unlawful activity.
These are not always exact substitutes because their legal meanings differ.
Formal and Professional Alternatives
For formal, academic, legal, or professional writing, consider:
Offender
Perpetrator
Lawbreaker
Convicted offender
Felon
Wrongdoer
Suspect
Defendant
Alleged offender
Be careful with these terms because suspect and defendant do not mean the same thing as criminal.
For example:
Police questioned the suspect.
does not establish that the person is a criminal.
Casual Alternatives
In informal conversation, you may hear:
Crook
Outlaw
Gangster
Hoodlum
Thug
Bad guy
These terms are often more expressive than precise.
The movie follows a group of bank robbers and other crooks.
Stronger or More Specific Alternatives
Some alternatives communicate a particular type of criminal or crime:
Murderer — someone who commits murder
Thief — someone who steals
Robber — someone who takes property using force or threat
Burglar — someone who unlawfully enters a building, typically to commit a crime
Fraudster — someone who commits fraud
Smuggler — someone involved in illegal movement of goods or people
Gangster — a member of or person associated with organized criminal activity
Fugitive — someone fleeing from authorities or justice
These are not general synonyms for every use of criminal. They identify particular circumstances.
Synonyms vs. Near Synonyms
| Word | Meaning | Tone | Exact Substitute? |
|---|---|---|---|
| Offender | Person who violates a law or rule | Neutral | Often |
| Lawbreaker | Person who breaks the law | Neutral | Often |
| Culprit | Person responsible for a particular wrongdoing | Neutral | Sometimes |
| Perpetrator | Person who committed a particular crime or harmful act | Formal | Sometimes |
| Felon | Person convicted of a felony | Legal | No |
| Convict | Person convicted of a crime | Legal/formal | No |
| Wrongdoer | Person who does something wrong | Broad | Sometimes |
| Outlaw | Person outside or against the law | Dramatic | Sometimes |
| Crook | Person who engages in dishonest or criminal behavior | Informal | Sometimes |
| Suspect | Person believed to have possibly committed a crime | Neutral | No |
| Defendant | Person accused in a legal case | Legal | No |
Comparison Table
| If you mean… | Best alternative |
|---|---|
| Anyone who breaks the law | Offender |
| Someone who breaks a law | Lawbreaker |
| Person responsible for a specific crime | Perpetrator |
| Person responsible for a specific wrongdoing | Culprit |
| Person convicted of a felony | Felon |
| Person convicted of a crime | Convict |
| Person who does something wrong | Wrongdoer |
| Informal word for a criminal | Crook |
| Person accused but not proven guilty | Suspect |
| Person being prosecuted in court | Defendant |
How to Choose the Right Alternative
Use offender when you need a broad, neutral term.
Use perpetrator when discussing the person who committed a particular crime.
Use culprit when identifying the person responsible for a particular incident.
Use felon only when the relevant legal classification is a felony.
Use convict when the person has been convicted.
Use suspect when guilt has not been established.
Use crook in informal writing or dialogue rather than formal legal writing.
Sentence Transformations
Original
The police arrested the criminal.
Alternative:
The police arrested the offender.
Original
Investigators identified the criminal.
Alternative:
Investigators identified the perpetrator.
Original
The criminal was convicted of a serious offense.
Alternative:
The felon was convicted of a serious offense.
Original
The police caught the criminal responsible for the robbery.
Alternative:
The police caught the culprit responsible for the robbery.
Original
The criminal was sentenced to prison.
Alternative:
The convict was sentenced to prison.
Original
The suspect was treated like a criminal.
Alternative:
The suspect was treated as though they were guilty.
Original
The criminal broke the law repeatedly.
Alternative:
The lawbreaker repeatedly violated the law.
Original
The criminal organization operated secretly.
Alternative:
The criminal organization operated covertly.
Original
The criminal entered the building illegally.
Alternative:
The burglar entered the building unlawfully.
Original
The criminal stole money from the company.
Alternative:
The thief stole money from the company.
Real-World Examples
Legal Writing
The court sentenced the convicted offender after reviewing the evidence.
News Writing
Police are searching for the perpetrator of the robbery.
Academic Writing
Criminal behavior can have complex social and economic causes.
Everyday Conversation
The movie is about a group of clever crooks.
Law Enforcement
Officers arrested the suspect after collecting additional evidence.
Common Mistakes
1. Calling a suspect a criminal
A suspect has not necessarily been proven guilty.
Incorrect:
The police arrested the criminal, who was only a suspect.
Better:
The police arrested the suspect.
2. Using “convict” for an accused person
A convict has been convicted.
Incorrect:
The accused man was called a convict before the trial.
Better:
The accused man was called a suspect before the trial.
3. Treating “felon” as a universal synonym
A felon is associated with a felony, not simply any violation of the law.
4. Using “culprit” for every criminal
A culprit is usually the person responsible for a particular incident. It is not necessarily a general label for someone’s criminal identity.
5. Using slang in formal writing
Words such as crook, thug, and hoodlum can sound informal or judgmental.
6. Assuming “illegal” means criminal
Illegal describes an action or thing that violates the law. Criminal can describe a person or conduct connected with crime.
7. Using “perpetrator” without a specific wrongdoing
Perpetrator usually works best when there is a particular crime or harmful act involved.
Confused Words
Criminal vs. Suspect
A criminal is generally someone known or legally established to have committed a crime, while a suspect is someone believed to possibly have committed one.
Criminal vs. Defendant
A defendant is a person accused in a legal proceeding. Being a defendant does not automatically mean being guilty.
Criminal vs. Offender
Offender is broader and can be used for someone who violates a law, rule, or regulation.
Criminal vs. Felon
A felon specifically refers to someone convicted of a felony in legal systems that use that classification.
Grammar and Usage
Criminal can function as both a noun and an adjective.
As a noun
The criminal was arrested.
As an adjective
The investigation uncovered criminal activity.
Common collocations include:
criminal activity
criminal behavior
criminal offense
criminal investigation
criminal record
criminal case
criminal justice
criminal law
criminal organization
criminal charges
When Not to Use an Alternative
Do not replace criminal automatically.
Use suspect when the person’s guilt has not been established.
Use defendant when referring to someone involved in a court case.
Use felon when the relevant conviction is a felony.
Use convict when referring to someone who has been convicted.
Use perpetrator when focusing on who committed a specific crime.
Use culprit when focusing on who was responsible for a particular incident.
Accuracy is more important than finding a synonym that simply sounds different.
Writing Improvement Tips
Choose offender for a broad, neutral term.
Choose perpetrator for a specific crime.
Choose culprit when identifying responsibility.
Choose felon only when the felony classification matters.
Avoid calling someone a criminal when they are only a suspect.
Avoid slang in professional and legal writing.
Use crime-specific words such as thief or burglar when the exact offense matters.
Consider the legal status of the person before choosing a synonym.
Editor’s Choice
For most neutral contexts, offender is the safest alternative to criminal.
For crime reporting, perpetrator is often more precise when referring to the person who committed a specific act.
For legal contexts, use the exact term that matches the person’s status, such as suspect, defendant, convict, or felon.
Related Questions
What is another word for a criminal person?
What is a formal word for criminal?
What is a synonym for lawbreaker?
What is the difference between a criminal and an offender?
What is another word for someone who commits a crime?
What is the difference between a suspect and a criminal?
What is a polite or neutral word for criminal?
FAQs
What is the best synonym for criminal?
Offender is one of the best general synonyms because it is broad and relatively neutral. However, perpetrator, culprit, felon, and convict may be more accurate in specific situations.
What is a formal word for criminal?
Formal alternatives include offender, perpetrator, lawbreaker, and convicted offender. The best choice depends on whether the person has been accused, convicted, or identified as responsible for a particular crime.
Is “offender” the same as “criminal”?
Not always. Offender is broader and can refer to someone who violates a law, rule, or regulation. Criminal more specifically relates to criminal conduct.
What is another word for someone who commits a crime?
Depending on context, you can use offender, perpetrator, lawbreaker, culprit, or wrongdoer. If the exact crime is known, a more specific word such as thief or burglar may be better.
What is the difference between a criminal and a suspect?
A suspect is someone believed to possibly be involved in a crime. The term does not establish guilt. Criminal implies criminal wrongdoing has been established or is being discussed as a fact.
Is “felon” a synonym for criminal?
Felon is a narrower term. It generally refers to someone convicted of a felony. Therefore, it should not be used as a universal replacement for criminal.
Is “culprit” a synonym for criminal?
Sometimes. Culprit means the person responsible for a particular crime, mistake, or wrongdoing. It is especially useful when discussing responsibility for one specific incident.
What is an informal word for criminal?
Common informal alternatives include crook, outlaw, gangster, and hoodlum. These words can carry strong or negative connotations and are not suitable for every context.
Key Takeaways
Offender is one of the broadest and most neutral alternatives to criminal.
Perpetrator is useful for the person who committed a specific crime.
Culprit focuses on responsibility for a particular incident.
Felon and convict describe specific legal statuses and should not be used interchangeably with criminal in every situation.
Always distinguish criminal, suspect, defendant, offender, and convict to avoid inaccurate or unfair wording.
Conclusion
The best synonym for criminal depends on exactly what you mean. Offender works well as a broad and neutral alternative, while perpetrator is more precise for a specific crime and culprit emphasizes responsibility. Legal terms such as felon and convict should be used only when they accurately describe a person’s legal status. In sensitive or professional writing, terms such as suspect and defendant should never be replaced with criminal unless guilt has been established. Choosing the right word makes writing more accurate, fair, and clear.