Synonyms for Sponsor

Underwrite
assure attest bond endorse	ensure guarantee guaranty insure	secure sign sponsor stand behind	stand up for subscribe to undersign underwrite

Upholder
adherent admirer advocate aficionado angel apologist backer bipartisan champion contributor defender	dependence Dionysus endorser exponent fan friend at court guarantor insurer mainstay notary paranymph	partisan party patron promoter proponent protagonist reliance second seconder sectary sponsor	standby subscriber surety sustainer sympathizer underwriter upholder votary well-wisher

Support
aid assist bankroll capitalization capitalize	finance financing fund grubstake patronize	provide for sponsor sponsorship stake subscribe to	subsidize subsidy support underwrite