- n1. warrant, warranty, guarantee, Obs. vouch; contract, compact, covenant, obligation, engagement, agreement, gentlemen's agreement, handshake; pledge, promise, assurance, word, word of honor, oath, sworn statement, Archaic. plight.2. collateral, surety, Law. security, earnest, Law. earnest money, deposit; pawn, gage, Insurance. bond, Law. mortgage, Law. mortgage bond, bail, Law. bail bond, Rare. hostage.3. securing, ensuring, Sl. cinching; warranting, Early Eng. Law. voucher, vouching, endorsement, attestation; assurance, promising, pledging, swearing.v4. ensure, secure, sponsor, assure, pledge. See guarantee(defs.6-8).
A Note on the Style of the synonym finder. 2014.