LATIN DICTIONARYLexicon Latīnum
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“danger” in Latin

The English word danger itself goes back to Latin dominus, through *dominiārium.

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

danger
periculum (a dangerous situation): discrimen (the critical moment of danger; hence sometimes opposed to periculum, as Phil., 7, 1, adducta est res in maximum periculum, et extremum paene discrimen; also Liv., 8, 24; quid in discrimine periculi cunctaretur, interrogans; still oftener, however, combined; allatum est periculum discrimenque patriae, Cic., Off., 1, 43, 154; discrimina periculaque): dimicatio fortunae (or fortunarum), vitae or capitis (when one’s fortune, one’s life is at stake). Dangers and toils, pericula ac labores (e.g., obire): the toils and dangers of life, vitae pericula laboresque (the usual order; Vid: Cic., Arch., 12, 30; Off., 1, 10, 29). Danger and difficulty, periculum negotiaque: to rush into certain danger under the influence of uncertain hopes, dubia spe impulsum certum in periculum se committere: don’t foolishly court danger, minime sis canterium in fossam (Prov., Liv., 23, 47; Vid: Latin Dict, canterius): to expose one’s self to danger, periculum adire, obire, subire, suscipere: to rush into danger, in periculum se offeree or inferre [☞ not periculo se exponere]; in discrimen se conferre, se inferre, se objicere. Anybody is in danger of not, etc., aliquis in periculum venit, ne, etc. (Cic.). To be in no danger of falling, a periculo decidendi abesse (Plin.): to encounter danger, periculum adire, ingredi: certain danger, manifesto periculo corpus objicere, or caput offerre; ad pestem ante oculos positam proficisci; needlessly, periculo temere or sine causa se offerre; for anybody, subire pro aliquo periculum; for anybody’s safely, inferre se in periculum capitis atque vitae discrimen pro alicujus salute (if one’s life is risked): to bring anybody into danger, aliquem in periculum, in discrimen adducere, deducere, vocare: to lead or bring anybody into great danger, multum periculi alicui inferre; magnum in periculum aliquem adducere: to bring into extreme danger, aliquem or aliquid in praeceps dare (e.g., rempublicam): to try to place anybody in circumstances of danger, periculum alicui intendere, moliri: to change anybody’s peaceful condition into one of extreme danger, aliquem ad scopuum e tranquillo auferre; aliquem in scopulum (e tranquillo) inferre (Vid: Ter., Phorm., 4, 48; Liv., 38, 10): to be in danger, in periculo or discrimine esse, versari; in dubio esse (of life): in periculum or in discrimen venire, incidere; periculum subire (of things): to be in very great danger, in summo (ingenti) periculo esse; in maximum periculum et extremum paene discrimen adductum esse (of things): in extreme danger, in praecipiti esse; in extremo situm esse (of things): Prov., inter sacrum et saxum stare (to be between the victim and the knife; Plaut., Capt., 3, 4, 84): to be in danger of losing anything, decernere, dimicare de re (Vid: Commentator on Nep., Timoth., 4, 3: Cic., Off., 1, 24, 83): to be in danger of losing one’s life, de vita dimicare; vitae periculum aditurum esse: you are in the same danger yourself, in eadem es navi (Prov., Cic.): anything is in danger, agitur aliquid (= is at stake). (The words are found in this connection and order.) res agitur, in discrimenque ventum est: to be in danger on every side, undique imminent discrimina; lupum, id quod aiunt, auribus teneo: to be exposed to two dangers, periculo ancipiti premi: to be out of danger, extra periculum esse; in tuto esse; a periculo abesse, vacare, periculo vacuum esso; in portu esse or navigare (Prov., to be safe in port; the first, of persons and things; the last, of things only): to pass through a danger safely, periculo perfungi: to be threatened with a danger, periculum alicui impendet, instat: to avoid a danger, periculum declinare (Cic.), vitare (Caes.): to escape from a danger, periculum effugere, subterfugere: to exaggerate the danger of anything, *periculum alicujus rei verbis augere or exaggerare: to put out of danger, tutum praestare, in tuto collocare aliquid or aliquem: to avert danger, periculum depellere, propulsare; from anybody, a aliquo: to avert a danger that threatens everybody, periculum. quod omnibus intenditur, propulsare.
Danger of one’s life, vitae or mortis periculum (general terms): vitae or salutis discrimen (critical state of things, when one’s life is at stake): capitis periculum or discrimen (danger of losing one’s head). To be or stand in danger of one’s life, in capitis or vitae periculum vocatum esse; ad mortis periculum adductum esse (of an accused person); in praecipiti esse (of a sick person). He says that anybody’s life (= his neck) is in no danger, a securi negat alicui periculum esse (Cic.). [Vid: “RISK one’s life,” under To RISK.] To bring anybody’s life into danger, aliquem in capitis periculum inferre, inducere, arcessere.
Of a sick man. To be in danger, in praecipiti esse; in periculo mortis esse (Cels.); aliquem vix ulla medicina periculo subtrahit, or aliquis vix sanescit (of a case that is always one of great danger): to be out of danger (of a sick person), omni periculo vacare; tutum esse: to be almost out of danger, in bona, spe esse; potest alicui secunda valetudo contingere (he may recover): to be quite out of danger, ex toto tutum esse (all, Cels., 2, 8); sine ullo metu esse (ib.): he is in some danger of his life, salus ejus infestior est (Cic.).

Quick answer

What is the Latin word for danger?
The usual Latin words for “danger” are perīculum, discrīmen, vīta; also caput, interrogō. 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.