Synonyms of assure in English:

assure


See US English definition of assure

See UK English definition of assure

See Spanish definition of asegurar

verb

1‘we need to assure him of our loyal support’

SYNONYMS
reassure, convince, satisfy, persuade, guarantee, promise, tell
prove to, certify to, attest to, confirm to, affirm to, pledge to, swear to, give one's word to, give one's assurance to, vow to, declare to

2‘he made some changes in his cabinet to assure a favourable vote’

SYNONYMS
ensure, make certain, make sure
secure, guarantee, seal, set the seal on, clinch, confirm, establish
informal sew up

3‘they guarantee to assure your life for £750,000’

SYNONYMS
insure, provide insurance for, cover, indemnify, guarantee, warrant