suave, adj. — Green’s Dictionary of Slang

suave adj.

also swave

[SE suave, soothingly agreeable; ult. Lat. suavis, sweet]

(US campus/teen) stylish, charming; also as v., to be charming.

1978		H. Selby Jr Requiem for a Dream (1987) 34: Im not too swave when Im ripped.
1980		Eble Campus Sl. Fall 6: suave – cool: ‘That outfit, lady, is suave.’.
1990		Eble Campus Sl. Nov. 8: suave – act suave.