A threat should never be spoken, your enemy should not be told of your intentions. Either take decisive action or refrain from it, but never threaten
(v. t.) To hold back; to restrain; to keep within prescribed bounds; to curb; to govern.
(v. t.) To abstain from
(v. i.) To keep one's self from action or interference; to hold aloof; to forbear; to abstain.
(v.) The burden of a song; a phrase or verse which recurs at the end of each of the separate stanzas or divisions of a poetic composition.