warranter

English Thesaurus

1. one who provides a warrant or guarantee to another (noun.person)

hypernym	:	patron, sponsor, supporter,
definition	:	someone who supports or champions something (noun.person)

derivation	:	guarantee, warrant,
definition	:	stand behind and guarantee the quality, accuracy, or condition of (verb.communication)

derivation	:	guarantee, warrant,
definition	:	stand behind and guarantee the quality, accuracy, or condition of (verb.communication)