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falling headlong; rushing hastily onward; unduly sudden: precipitant decision
Not to be confused with:
precipitate – hasten the occurrence of; to cast, plunge, or send violently; accelerate: precipitate a fight
precipitous – extremely steep; abrupt, sheer: a precipitous slope


1. Rushing or falling headlong.
2. Acting with or marked by impulsiveness in thought or action; rash. See Usage Note at precipitate.
3. Abrupt or unexpected; sudden.
n. Chemistry
A substance that causes a precipitate to form when it is added to a solution.

[Latin praecipitāns, praecipitant-, present participle of praecipitāre, to throw headlong; see precipitate.]

pre·cip′i·tant·ly adv.


1. hasty or impulsive; rash
2. rushing or falling rapidly or without heed
3. abrupt or sudden
(Chemistry) chem a substance or agent that causes a precipitate to form
preˈcipitance, preˈcipitancy n
preˈcipitantly adv


(prɪˈsɪp ɪ tənt)

1. hasty, sudden, or headlong; precipitate.
2. Chem. something that causes precipitation.
[1600–10; < Latin praecipitant- (s. of praecipitāns), present participle of praecipitāre to hurl down]
pre•cip′i•tan•cy (-tən si) pre•cip′i•tance, n.
pre•cip′i•tant•ly, adv.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.precipitant - an agent that causes a precipitate to form
agent - a substance that exerts some force or effect
dimethylglyoxime - a compound used in analysis as a precipitant for palladium or nickel
Adj.1.precipitant - done with very great haste and without due deliberation; "hasty marriage seldom proveth well"- Shakespeare; "hasty makeshifts take the place of planning"- Arthur Geddes; "rejected what was regarded as an overhasty plan for reconversion"; "wondered whether they had been rather precipitate in deposing the king"
hurried - moving rapidly or performed quickly or in great haste; "a hurried trip to the store"; "the hurried life of a city"; "a hurried job"


2. Happening quickly and without warning:


n(Aus)fällungsmittel nt
adj = precipitate ADJ