LATIN DICTIONARYLexicon Latīnum
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“crisis” in Latin

The English word crisis itself goes back to Latin crisis.

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

crisis
Decisive or turning-point of affairs, discrimen (general term): momentum (the point at which a matter is decided, ῥοπή). A crisis of affairs, inclinatio temporis, rerum, etc. (the change effected by a crisis). In this alarming crisis of our affairs, in ipso discrimine periculi (Liv.); in extremo discrimine ac dimicatione fortunae (Cic.): to be brought to a crisis, (summum) in periculum ac discrimen vocari or venire (of a thing; salus alicujus, Cic.): the crisis of our affairs is come, in summo res est discrimine (Caes.): when the crisis comes, cum in discrimen ventum est; cum ultimi discriminis tempus adventat: the crisis is over, discrimen sublatum est. [Vid: CRITICAL (state)].
In medicine, the height of a disorder, when a favorable or unfavorable turn may be expected, dies potens, gravis or quo de aegro judicatur (Cels.; crisis occurs Sen., Ep., 83; eamdem [cum aliquo] crisim habere): dies crisimus (caelius, Aur. Tard.; these expressions = the critical day): [morbi] accessio, quam criticam medici vocant (Aug. Confess., 6, 1, extr., of its occurrence). Vid: CRITICAL (day).

Quick answer

What is the Latin word for crisis?
The usual Latin words for “crisis” are discrīmen, mōmentum, gravis; also accessiō, rēs, et cētera. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.