LATIN DICTIONARYLexicon Latīnum
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“useful” in Latin

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

useful
utilis (useful; ☞ conducibilis does not belong to good prose): salubris (as masculine, Cic., Cels.; saluber, Varr. and Ov.): salutaris (salutary; the latter also with ad aliquid): efficax (efficacious): commodus: accommodatus: aptus (convenient, fit). To be useful, utilem, etc. esse; usui, utilitati esse; ex usu esse; prodesse; conducere; for any purpose, valere or vim habere ad aliquid (to have influence upon anything): prodesse or adjuvare ad aliquid (to be of use toward effecting an object; the latter also, with ut).

Quick answer

What is the Latin word for useful?
The usual Latin words for “useful” are ūtilis, sălūbris, salūtō; also efficāx, commodus, accommodō. 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.