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