Here's what rhymes with signifiicant.
piquant mendicant Words that almost rhyme with signifiicant
weakened recent frequent decent regent weakest leant sicut seulement sealant meekest sleekest secret deepest cheapest indecent infrequent sweetest keenest meanest peanut chiefest sequenced steepest licit neatest theist sapient bleakest fleetest reshipped seafront sheerest leanest serenest realest beechnut reedit liefest shiest sliest serest treatment agreement achievement bereavement impeachment sentient appeasement decedent leaflet antient briefest defilement mistreatment tliat cleanest bafflement preachment wiliest meagerest disagreement machinist benignant disablement enfeeblement impalement insentient gaudiest beguilement discreetest messiest puniest revilement cajolement gamiest regalement chariest fruitiest mangiest obscenest crispiest laciest pastiest scaliest woodenest mousiest convenient concealment maltreatment pretreatment completest ennoblement orthopedist enjambement pointillist orthopaedist corniest sultriest uncleanest untidiest wintriest tangiest unwariest inconvenient underachievement pantomimist paltriest unloveliest unhandiest unmanliest inconvenienced intercollegiate