lawful

adjective

law·​ful ˈlȯ-fəl 

1

a

: being in harmony with the law

a lawful judgment

b

: constituted, authorized, or established by law : rightful

lawful institutions

2

: law-abiding

lawful citizens

lawfully

ˈlȯ-f(ə-)lē 

adverb

lawfulness

ˈlȯ-fəl-nəs 

noun

Synonyms of lawful

• legitimate
• legal

Choose the Right Synonym for lawful

lawful, legal, legitimate, licit mean being in accordance with law.

lawful may apply to conformity with law of any sort (such as natural, divine, common, or canon).

the lawful sovereign

legal applies to what is sanctioned by law or in conformity with the law, especially as it is written or administered by the courts.

legal residents of the state

legitimate may apply to a legal right or status but also, in extended use, to a right or status supported by tradition, custom, or accepted standards.

a perfectly legitimate question about taxes

licit applies to a strict conformity to the provisions of the law and applies especially to what is regulated by law.

the licit use of drugs by doctors

Examples of lawful in a Sentence

a lawful search of the property

hunting is a lawful activity only if you have the proper license

Recent Examples on the Web

As a condition of receiving the Prize, each potential winner will be required to complete and return a Promotions Release and Affidavit, which includes confirmation of eligibility, a liability release, and, where lawful, a publicity release. —AJC.com, 7 May 2026

Ferguson’s office defined doxing as the act of gathering, by lawful and unlawful means, and posting on the internet personal identifying information, such as a home address, and other sensitive information about a person without their knowledge and consent. —Max Rego, The Hill, 6 May 2026

The city has banned an arm in common use for lawful purposes by law-abiding citizens. —Shelly Bradbury, Denver Post, 4 May 2026

Our public spaces — sidewalks near schools, parks, libraries and other sensitive locations — must remain safe and accessible for all residents, and the ordinance provides a lawful, structured framework for addressing encampments that interfere with public safety and access. —Teresa Liu, Daily News, 4 May 2026

Word History

First Known Use

14th century, in the meaning defined at sense 1a

Rhymes for lawful

• awful
• offal
• waffle
• unlawful

Kids Definition

lawful

adjective

law·​ful ˈlȯ-fəl 

1

: permitted by law

lawful conduct

2

: recognized by law : rightful

the lawful owner

lawfully

-f(ə-)lē 

adverb

lawfulness

-fəl-nəs 

noun

Legal Definition

lawful

adjective

law·​ful

1

a

: being in harmony with the law

a lawful judgment

a lawful purpose

b

: constituted, authorized, or established by law

a lawful duty

2

: law-abiding

lawful citizens

lawfully adverb

lawfulness noun