LATIN DICTIONARYLexicon Latīnum
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“dangerous” in Latin

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

dangerous
periculosus (general term): periculi plenus. (☞ aleae plenus is poetical): anceps: dubius. (The words are found in this connection and order.) periculosus et anceps: perniciosus (leading to destruction or ruin): capitalis (threatening a man’s life or temporal well-being with danger): gravis (far from inconsiderable or unimportant; e.g., a war, an opponent; then, also, dangerous to one’s health, etc.). (The words are found in this connection and order.) gravis et periculosus. A dangerous person, homo periculosus, perniciosus, capitalis: a very dangerous affair, res magni periculi: a dangerous situation, res dubiae; angustiae (state of doubt and difficulty): discrimen (the critical point in a dangerous question or affair): In this dangerous state of affairs, hoc in tempore (Vid: Commentator on Nep., Milt., 5, 1): to be in a dangerous situation, in discrimine (in angustiis) esse or versari: in a very dangerous situation, in maximum periculum et extremum paene discrimen adductum esse (of a stale, etc.): our country is in a very dangerous state, allatum est periculum discrimenque patriae: to bring anybody into an exceedingly dangerous position (where life or property, etc.: may be lost), aliquem in summum capitis periculum arcessere; aliquem in discrimen omnium fortunarum vocare: It will be very dangerous for you to do, etc., summo periculo facies, etc. (Cic.): dangerous times, tempora periculosa, periculi plena; tempora dubia: dangerous places in the sea, *loca maris periculosa, or incerta (poetically, brevia or vada brevia). Cf.,” It is dangerous,” is often translated by adverb, periculose; thus, it is dangerous to sail in the winter, periculose navigatur hieme.

Quick answer

What is the Latin word for dangerous?
The usual Latin words for “dangerous” are perīculōsus, anceps, dubius; also perniciōsus, capitālis, gravis. 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.