Synonyms for Pass Off (same or very similar meaning)
WordNet sense 1 (disappear gradually):
fade, fleet, pass, evanesce, blow overWordNet sense 2 (come to pass):
hap, happen, occur, go on, fall out, come about, take placeWordNet sense 3 (expel (gases or odors)):
breathe, emitFrom the ODE community, based on WordNetadd/edit