Words that Rhyme with efficacy
2 Syllable Words
assay, bassi, brassy, cassie, chassis, classy, glassey, glassy, grassi, grassy, hassey, kasey, lassie, masci, massey, massi, massie, passey, rasey, sassi, sassy, stassi, tassi, vasey, vassey
3 Syllable Words
4 Syllable Words
malagasy, profligacy, tallahassee
Definition of efficacy
n. Power to produce effects; operation or energy of an agent or force; production of the effect intended; as, the efficacy of medicine in counteracting disease; the efficacy of prayer.