colloquial. In weakened or ironic use: excellent, splendid; marvellous. Chiefly in predicative use, or as int.

‘Fine’, ‘great’; ‘all well and good’; ‘so be it’. Frequently ironically.

Well done! Also as n., an exclamation of Shabash!

= all right, int. (in various senses).

A heap; plural ‘heaps’, ‘crowds’. Also as an exclamation = Great!

Very good! Very well! Cf. quies, adj.

Chiefly British. In interjectional or elliptical uses of sense 19a. good show, jolly good show: used to express approval or admiration; ‘excellent’…

that's (also it's) the gear: an expression of approval. Hence as adj., good, excellent, ‘great’. Also as int. slang.

That is, or has the character or style of, a ‘swell’; befitting a ‘swell’. int. As an expression of satisfaction.

Used to express approval or admiration.

U.S. slang. In the language of jazz: excellent, first-rate, ‘great’; (see also quot. 1937). Also as int. solid sender: see solid sender at sender, n.…

colloquial (originally U.S.). Expressing enthusiastic approval: excellent, fantastic, amazing. Cf. sense A. 1c.

Expressing enthusiastic approval: great, excellent, highly impressive; fantastic.

Expressing enthusiastic approval: ‘fantastic!’, ‘amazing!’