adv. 25B6; preposition he was asked a question apropos his resignation : WITH REFERENCE TO, with regard to, with respect to, regarding, concerning, on the subject of, connected with, about, re.
25B6; adjective the word conglomerate was decidedly apropos : APPROPRIATE, pertinent, relevant, apposite, apt, applicable, suitable, germane, material.
inappropriate.
25A0; apropos of nothing IRRELEVANTLY, arbitrarily, at random, for no reason, illogically.