Synonyms for Repress (same or very similar meaning)
WordNet sense 1 (put down by force or intimidation):
quash, reduce, subdue, subjugate, keep downWordNet sense 2 (conceal or hide):
muffle, smother, stifle, strangleWordNet sense 3 (put out of one's consciousness):
suppressFrom the ODE community, based on WordNetadd/edit