Without connotations of licentiousness or vulgarity: frivolous or foolish behaviour; jesting, mirth, idle gossip. Obsolete.

Folly, foolish conduct. Cf. nice, adj. 1.

Foolish conduct or behaviour; (as a count noun) a foolish act or thing. Obsolete.

Foolishness; foolish or silly behaviour.

The particoloured costume of a jester, harlequin, etc. Hence allusively, esp. foolery, nonsense; the profession or practice of a jester, clown…

humorous. Foolish talk or behaviour.

In plural. Foolish or silly behaviour, folly (humorously imagined as a medical condition). Frequently in phrases relating to attempting to cure this…

Foolish or extravagant conduct; silliness, misbehaviour. Chiefly in negative contexts, as to stand (also take) no nonsense, there is no nonsense about…

Foolish behaviour.

The action or fact of doing something foolish, especially making foolish mistakes; foolishness, stupidity. Also: an instance of this; a foolish…

Foolish conduct or behaviour; silliness.

The action of ‘raking’ the moon, or engaging in foolish or unprofitable activity. Chiefly figurative in one's wits are (also have) gone moon-raking…

Silly behaviour, nonsense. Obsolete. rare.

Stupid or obnoxious behaviour, attitude, speech, etc. Cf. twat, n. 2.