The Oxford Thesaurus An A-Z Dictionary of Synonyms - threatn.

1) intimidation, menace, commination, warning, peril, risk, danger, Damoclean sword: It is not honesty but the threat of punishment that deters many from crime. 2) omen, presage, portent, foreboding, forewarning, intimation: The villagers lived under a constant threat from the smoking volcano.