Synonyms for guarantee

Synonyms (Grouped by Similarity of Meaning) of verb guarantee

Sense 1:

guarantee, vouch
pledge, plight

Sense 2:

guarantee, ensure, insure, assure, secure

Sense 3:

undertake, guarantee
promise, assure

Sense 4:

guarantee, warrant
back, endorse, indorse, plump for, plunk for, support