RichThesaurus
give high sign
give high sign
synonyms
explain
warrant
substantiate
thumbs up
sanction
give the goahead
certify
give green light
check
make good
vouch
establish
buy
approve
subscribe
rubber-stamp
make sure
support
justify
give stamp of approval
back
corroborate
sign
endorse
confirm
uphold
settle
sign off on
bear out
authenticate
bless
attest
circumstantiate
debunk
underpin
okay
size up
affirm
give the nod
lap up
witness
verify
double-check
check out
give high sign
antonyms
invalidate
void
veto
oppose
annul
destroy
disprove
contradict
cancel