have a lock on

approved assured endorsed insured pledged protected secured surefire

affirmed ascertained attested bonded certified confirmed plighted sealed warranted

for a fact for sure on ice sure sure-enough

disapproved uncertain

indefinite insecure unsure

assert confirm declare guarantee insist maintain profess ratify repeat

asseverate attest aver avouch avow certify cinch clinch ice okay predicate pronounce set state swear testify vouch witness

cross heart lock up nail down put on ice rubber-stamp say so swear on bible swear up and down

deny forget veto

disavow refute reject renounce repudiate

negate nullify

confirm ensure guarantee insure secure

cinch clinch complete ice lock seal set

lock on lock up make sure nail down put on ice

halt