vouch

verb 0.935

avouch

verb 0.780

vouchsafe

verb 0.684

endorse

verb 0.582

stick up for

verb 0.562

voucher

verb 0.545

guarantee

verb 0.542

bear out

verb 0.537

swear by

verb 0.535

vow

verb 0.534

speak for

verb 0.529

stand up for

verb 0.525

approve

verb 0.524

avow

verb 0.520

warranty

verb 0.514

advocate

verb 0.512

favor

verb 0.506

recommend

verb 0.506

verify

verb 0.506

assure

verb 0.502

cosign

verb 0.501