What is the Latin word for nineteen?

The usual Latin words for “nineteen” are ūndēvīgintī, undēvīcēni. The right choice depends on the sense; see the distinctions below.

English → Latin

“nineteen” in Latin

ūndēvīgintīnineteen; 19 undēvīcēninineteen each

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

nineteen

decem et novem (☞ not novem et decem): undeviginti (more rare; ☞ novemdecim is without authority, Vid: Zumpt, § 115): (distributive) undeviceni. Nineteen hundred, mille et nongenti: nineteen thousand, undeviginti millia: nineteen hundred thousand, undevicies centum millia: nineteen hundred times, millies et nongenties: nineteen thousand times, undevicies millies.

Quick answer

What is the Latin word for nineteen?: The usual Latin words for “nineteen” are ūndēvīgintī, undēvīcēni. 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.