(of a gay or bisexual man (or, rarely, of a lesbian), potentially offensive) Having the appearance, mannerisms, etc., of a stereotypical heterosexual of the same gender rather than those stereotypically associated with gay men or lesbians.

(intransitive, idiomatic) To misbehave; to cause trouble. / (intransitive, idiomatic) To perform the duties of an appointment senior to that actually held; to deputise for a superior.

A law which has received assent (royal, presidential or gubernatorial) after having been passed by the houses (or house) of a parliament.

(slang) Suicide.

Any act involving sexual stimulation; a sex act.

An excellent performance. / Someone or something whose performance is excellent. / (sometimes sarcastically) Someone or something who is generally well-mannered, conscientious, etc.

(law) An unforeseen occurrence beyond one's control, such as a natural disaster. / Used other than figuratively or idiomatically: see act, of, God.

(intransitive) to play the fool

present participle of act out

Third-person singular simple present indicative form of act out