Webster's Revised Unabridged Dictionary · 1913

Threat

Threat (thret) , noun

[Anglo-Saxon þreát, akin to āþreótan to vex, German verdriessen, Old High German irdriozan, Icelandic þrjōta to fail, want, lack, Gothic usþriutan to vex, to trouble, Russ. trudite to impose a task, irritate, vex, Latin trudere to push. Compare Abstruse, Intrude, Obstrude, Protrude.]

The expression of an intention to inflict evil or injury on another; the declaration of an evil, loss, or pain to come; menace; threatening; denunciation.
There is no terror, Cassius, in your threats. — Shakespeare

Threat , verb, transitive and intransitive

[Old English þreten, Anglo-Saxon þreátian. See Threat, n.]

To threaten. [Obsolete or Poetic] — Shakespeare
Of all his threating reck not a mite. — Chaucer
Our dreaded admiral from far they threat. — Dryden