lawful

lawful — adjective

1. approved or allowed by the official rules or legal system of a country.

1.adjectiveB1
Definition

approved or allowed by the official rules or legal system of a country.

Example

The court decided that the protest was a lawful way to express public concerns.

attributive: lawful + noun (way)

Downloading music from that website is not lawful under current copyright rules.

predicative: be + lawful + under [rule]

Common collocations
  • lawful business
  • lawful activity
  • lawful protest
  • lawful means
  • lawful purpose
  • lawful duty
  • remain lawful
  • lawful way
Synonyms
  • legal

    more common in everyday language; 'lawful' is more formal and restricted to legal/official contexts

  • legitimate

    adds a sense of moral or logical rightness beyond mere legal permission

  • permissible

    narrower — refers to what is allowed within a specific set of rules, not necessarily the law of the land

Antonyms
  • unlawful

    direct opposite, common in legal writing

  • illegal

    more common in everyday speech for acts prohibited by law

Grammar Patterns

lawful + noun (attributive)

be/seem/remain + lawful (predicative)

Usage Note

Frequently used in formal and legal contexts rather than everyday conversation. The negative form 'unlawful' is common in legal writing.

Common Mistakes

This parking spot is lawful to use.
This parking spot is legal to use.
'legal' is the everyday word for ordinary situations; 'lawful' sounds overly formal outside legal contexts.

2. officially recognized by a country's legal system as having rightful authority o

2.adjectiveB2
Definition

officially recognized by a country's legal system as having rightful authority or a valid claim to something.

Example

After the king's death, his eldest son became the lawful ruler of the kingdom.

collocation: lawful ruler

The house was finally returned to its lawful owner after years of court battles.

collocation: lawful owner

Common collocations
  • lawful owner
  • lawful heir
  • lawful government
  • lawful authority
  • lawful ruler
  • lawful representative
  • lawful management
  • lawful board
Synonyms
  • rightful

    focuses on moral and legal entitlement; interchangeable with 'lawful' in ownership contexts but less common in legal writing

  • legitimate

    suggests both legal and moral acceptance, often used for governments or authorities

  • authorized

    emphasizes official permission given by a person or body, not necessarily by law itself

Antonyms
  • illegitimate

    opposite of legitimate; suggests lack of legal or moral right

  • unauthorized

    focuses on lack of official permission rather than legal standing

Grammar Patterns

lawful + noun (attributive)

be + the + lawful + noun (predicative with article)

Usage Note

Typically used with nouns indicating a person's position or claim: owner, heir, government, ruler, representative. Not used for everyday permissions or actions.

Common Mistakes

He is the lawful driver of this car.' (when meaning he owns it legally).
He is the lawful owner of this car.
'lawful owner' indicates legal ownership; 'driver' is about who is driving, not who has a rightful claim.

3. describing a person who follows and respects the laws of a country or community

3.adjectiveB1
Definition

describing a person who follows and respects the laws of a country or community without breaking them.

Example

Samir has always been a lawful citizen who never gets into trouble with the police.

collocation: lawful citizen

The lawyer told her client to stay lawful and avoid breaking any rules.

predicative: stay + lawful

Common collocations
  • lawful citizen
  • lawful resident
  • lawful businessman
  • lawful person
  • lawful member
  • lawful taxpayer
  • stay lawful
  • remain lawful
Synonyms
  • law-abiding

    more common in everyday English for describing people; 'lawful' is more formal

  • honest

    broader — covers moral behavior beyond just following the law; not limited to legal compliance

  • upstanding

    adds a sense of moral integrity and social responsibility; more emphatic

Antonyms
  • criminal

    describes someone who commits crimes; stronger opposite than 'lawless'

  • lawless

    suggests a general disregard for the law rather than specific criminal acts

Grammar Patterns

lawful + noun (person/citizen/resident)

be/remain/stay + lawful (predictive for character)

Usage Note

Describes a person's character or habitual behavior, not a single action. You would say 'a lawful citizen' but not 'a lawful driver' for someone who simply drove safely once.

Common Mistakes

She made a lawful payment on time.' (meaning she paid correctly).
She is a lawful taxpayer who always files on time.
'lawful' describes the person's character, not a single action. Use 'legal' or 'correct' for one-time actions.

Word family

  • law
    nounA2
  • lawfully
    adverbB2
  • unlawful
    adjectiveB2
  • unlawfully
    adverbC1
  • lawless
    adjectiveC1
  • lawyer
    nounA2

Synonym discussion

Sense: adjective/1

Lawful, legal, legitimate, and permissible all relate to what is allowed, but they differ in formality and scope. Lawful is the most formal term, typically reserved for legal and official contexts — it means 'in accordance with the law of the land' (a lawful arrest, a lawful contract). Legal is the everyday word covering anything permitted by the legal system, from parking to marriage. Legitimate adds a moral or logical dimension: a government can be legal but not feel legitimate if people do not accept its authority. Permissible is the narrowest — it refers to what is allowed within a specific framework of rules (permissible noise levels, permissible use of library resources), not necessarily the country's law. For example, an action may be legally permissible but ethically questionable; a lawful business follows tax law, whereas a legitimate claim also feels fair and justified.

lawful ↗legal ↗legitimate ↗permissible ↗

Common collocations

Nouns

  • lawful conduct
  • lawful behavior
  • lawful process
  • lawful purpose

Adverbs

  • lawfully

Phrases

  • lawful business practice
  • lawful permanent resident

Prepositions

  • by lawful means
  • under lawful authority

Etymology

Old EnglishMiddle EnglishEnglish

Lawful comes from Middle English 'laweful', a combination of 'lawe' (law, from Old English 'lagu' meaning 'an ordinance or rule laid down') and the suffix '-ful' (full of, characterized by). The sense of 'permitted by law' appeared in the 14th century, while the meaning 'obedient to the law' (describing a person) developed later. The negative form 'unlawful' has existed since the same period.