A stage performance designed to be strange or unusual.

plural of novelty act

A performance typical of a circus, such as tightrope walking or fire eating. / Anything absurd or convoluted; a rigmarole.

plural of circus act

(psychology) A behavioral approach to psychological study with a focus on studying and inferring from actions rather than by studying through reflection or introspection.

Synonym of play possum

Third-person singular simple present indicative form of act possum

present participle of act possum

(Ireland) Alternative form of act the jennet

To behave in a manner appropriate to one's age. / (imperative, originally US) To behave in a mature manner; to avoid being childish.