Third-person singular simple present indicative form of act up

present participle of act up

simple past tense and past participle of act up

plural of sexual act

plural of balancing act

(entertainment) A performance that involves balancing things precariously and suspensefully. / (figuratively, idiomatic) An effort to manage many conflicting or competing items or interests.

An impulsive act lacking motive.

(idiomatic, US, chiefly colloquial) Authorization that is extremely difficult to get, especially in a timely fashion. / (literally, US politics) A statute enacted by the United States Congress.

(genetics) Describing transcription factors that regulate the expression of genes on the same chromosome.

(genetics) Describing transcription factors that regulate the expression of genes on a different chromosome.