What is the Latin word for fifty?

The usual Latin words for “fifty” are quīnquāgintā, quinquāgēni, quīnquāgēnārius; also quīnquāgiēns. The right choice depends on the sense; see the distinctions below.

English → Latin

“fifty” in Latin

quīnquāgintāfifty; 50 quinquāgēniFifty each quīnquāgēnāriusnumber fifty; fifty-year-old quīnquāgiēnsfifty times

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

fifty

quinquaginta: each fifty, quinquageni (i. e., fifty at once, especially of substantives that are used in the plur. number only; e.g., quinquagenae litterae, fifty letters, whereas quinquaginta litterae = fifty alphabetic letters): consisting of fifty, or containing fifty, fifty years old, or of age, quinquagenarius: a tube fifty inches in diameter, fistula quinquagenaria: fifty times, quinquagies.

Quick answer

What is the Latin word for fifty?: The usual Latin words for “fifty” are quīnquāgintā, quinquāgēni, quīnquāgēnārius; also quīnquāgiēns. 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.