LATIN DICTIONARYLexicon Latīnum
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“require” in Latin

The English word require itself goes back to Latin quaerō, through requīrō.

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

require
To need, poscere: postulare: requirere, desiderare (to hold as necessary): esse, with a genitive of a substantive, together with an adjective; e.g., it requires much labor, multi laboris est: to be required, opus esse: the times require it, tempus ita fert: If circumstances require it, si res or tempus postulat: si res cogit (of urgent circumstances): the affair requires great foresight, magnam res diligentiam requirit: as a thing requires, pro; e.g., as his dignity requires, pro ejus dignitate.
To ask, request, Vid.

Quick answer

What is the Latin word for require?
The usual Latin words for “require” are poscō, postulō, requīrō; also dēsīderō. 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.