'Threatening' definitions:

Definition of 'threatening'

(from WordNet)
adjective
Threatening or foreshadowing evil or tragic developments; "a baleful look"; "forbidding thunderclouds"; "his tone became menacing"; "ominous rumblings of discontent"; "sinister storm clouds"; "a sinister smile"; "his threatening behavior"; "ugly black clouds"; "the situation became ugly" [syn: baleful, forbidding, menacing, minacious, minatory, ominous, sinister, threatening]
adjective
Darkened by clouds; "a heavy sky" [syn: heavy, lowering, sullen, threatening]

Definition of 'Threatening'

From: GCIDE
  • Threaten \Threat"en\, v. t. [imp. & p. p. Threatened; p. pr. & vb. n. Threatening.] [OE. [thorn]retenen. See Threat, v. t.]
  • 1. To utter threats against; to menace; to inspire with apprehension; to alarm, or attempt to alarm, as with the promise of something evil or disagreeable; to warn. [1913 Webster]
  • Let us straitly threaten them, that they speak henceforth to no man in this name. --Acts iv. 17. [1913 Webster]
  • 2. To exhibit the appearance of (something evil or unpleasant) as approaching; to indicate as impending; to announce the conditional infliction of; as, to threaten war; to threaten death. --Milton. [1913 Webster]
  • The skies look grimly And threaten present blusters. --Shak. [1913 Webster]
  • Syn: To menace.
  • Usage: Threaten, Menace. Threaten is Anglo-Saxon, and menace is Latin. As often happens, the former is the more familiar term; the latter is more employed in formal style. We are threatened with a drought; the country is menaced with war. [1913 Webster]
  • By turns put on the suppliant and the lord: Threatened this moment, and the next implored. --Prior. [1913 Webster]
  • Of the sharp ax Regardless, that o'er his devoted head Hangs menacing. --Somerville. [1913 Webster]

Definition of 'Threatening'

From: GCIDE
  • Threatening \Threat"en*ing\, a. & n. from Threaten, v. -- {Threat"en*ing*ly}, adv. [1913 Webster]
  • Threatening letters (Law), letters containing threats, especially those designed to extort money, or to obtain other property, by menaces; blackmailing letters. [1913 Webster]