Someone who practices monogamy (one spouse at a time).

synonym: monogynist.

Roget 904: celibacy, singleness, single blessedness; bachelorhood, bachelorship^†; misogamy^†, misogyny.    virginity, pucelage^†; maidenhood, maidenhead.    unmarried man, bachelor, Coelebs, agamist^†, old bachelor; misogamist^†, misogynist; monogamist; monk.    unmarried woman, spinster; maid, maiden, virgin, feme sole [Fr.], old maid; bachelor girl, girl-bachelor; nun.    ... show more

Polish: monogamista