Filament rhymes with:
complement, element, implement, parliament, supplement, adamant, argument, armament, complement, condiment, detriment, diamant, disarmament, element, excrement, experiment, impediment, implement, increment, instrument, integument, ligament, ornament, orpiment, parliament, predicament, rearmament, regiment, sacrament, sediment, sentiment, supplement, temperament, tenement, testament, tournament, vehement
Filament sounds like:
falmouth, felland, fellmeth, filenet, filmed, flamed, flaunt, flaunted, flint, flinty, fluent, flynt, foland, folland, fulminate