A fully grown human or animal. / A person who has reached the legal age of majority.

Fully grown. / Intended for or restricted to adults rather than children. / Containing material of an explicit sexual nature; of, or pertaining to, pornography. / Vulgar or profane.

(intransitive, informal) To behave like an adult. / (nonstandard, rare) To (cause to) be or become an adult.

An adulterer, especially a male one.

To commit adultery. / To pollute something; to adulterate.

Third-person singular simple present indicative form of adulter

simple past tense and past participle of adulter

present participle of adulter

(rare) Completely grown; mature.

simple past tense and past participle of adult