OK
accede to
accept
accord to
accredit
adopt
affiliate
affirm
agree to
amen
approve
approve of
assent
attest
authenticate
authorize
autograph
back
back up
be willing
bear out
bolster
buttress
carry
certificate
certify
charter
circumstantiate
clinch
commission
condescend
confirm
connive at
consent
consent to silently
corroborate
cosign
countersign
deign
document
embrace
empower
enable
endorse
enfranchise
ensure
entitle
espouse
ratified
formalise
formalize
validate
ratifies
ratifying
ratification
ratifier
beatify
gratify
stratify