Synonyms of assure

1 Syllable
bag, sell, vouch, clinch
2 Syllables
vouched, vouching, vowed, protect, heartens, cinching, clinched, hearten, comfort, clinching, soothe
3 Syllables
certifying, warranting, reassuring, secured, ensured, persuading, guaranteeing, sedated, reassured, insuring, inspire, certify, protecting, certified, heartened, persuade, reassure, sedating, insure, ensuring, satisfy, ensure
4 Syllables
safeguarded, safeguarding, encourage