Open English Wordnet
Nouns
(n)menace, threatsomething that is a source of danger“earthquakes are a constant threat in Japan” (n)threata warning that something unpleasant is imminent“they were under threat of arrest” (n)threatdeclaration of an intention or a determination to inflict harm on another“his threat to kill me was quite explicit” (n)terror, scourge, threata person who inspires fear or dread“he was the terror of the neighborhood”