Synonyms and related words :
assurance, assure, attest, back, bail, bailsman, bargain, be sponsor for, bond, bondsman, certify, confirm, contract, countersecure, endorse, ensure, godfather, godparent, guarantee, guarantor, indemnity, insurance, insure, insurer, mainpernor, mortgagor, secure, security, sign, sign for, sponsor, stand behind, stand up for, stocks and bonds, subscribe to, surety, tie, undersign, underwrite, underwriter, warrant, warrantor, warranty