adjective
1.
conforming to an accepted standard of propriety or good form
decorous behavior seems regrettably out of fashion
Synonyms: au fait, becoming, befitting, Christian, civilized, comely, conforming, correct, decent, de rigueur, done, nice, proper, respectable, right, seemly
Related Word: ceremonial, ceremonious, conventional, formal; dignified, elegant; appropriate, fit, fitting, meet, seasonable, suitable; prim, punctilious, rigid, stiff, stuffy
Contrasted words: blatant, clamorous, obstreperous, strident; aggressive, assertive, pushing, pushy; coarse, gross, vulgar; easy, fast, loose; improper, incorrect, unbecoming
Antonyms: indecorous
2.
Synonyms: good 13, well-behaved