Complements rhymes with:
implements, implements, supplements, elements, filaments, implements, parliament's, parliaments, supplements, argument's, arguments, armaments, condiments, documents, elements, experiment's, experiments, filaments, impediments, implements, increments, instrument's, instruments, instruments', ligaments, monuments, ornaments, parliament's, parliaments, predicaments, regiments, sacraments, sediments, sentiments, supplements, temperaments, tenements, testaments, tournament's, tournaments
Complements sounds like:
complainant's, complainants, complaints, compliments