Origin: 1520–30; < L
imminent- (s. of
imminēns), prp. of
imminēre to overhang, equiv. to
im- im- 1 +
-min- from a base meaning “jut out, project, rise” (
cf. eminent, mount 2 ) +
-ent- -ent 
Related forms: im⋅mi⋅nent⋅ly, adverb
im⋅mi⋅nent⋅ness, noun
Synonyms:
1. near, at hand. Imminent, Impending, Threatening all may carry the implication of menace, misfortune, disaster, but they do so in differing degrees. Imminent may portend evil: an imminent catastrophe, but also may mean simply “about to happen”: The merger is imminent. Impending has a weaker sense of immediacy and threat than imminent: Real tax relief legislation is impending, but it too may be used in situations portending disaster: impending social upheaval; to dread the impending investigation. Threatening almost always suggests ominous warning and menace: a threatening sky just before the tornado struck.
Antonyms:
1. distant, remote.