LATIN DICTIONARYLexicon Latīnum
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“baby” in Latin

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

baby
infans: pupus; pupulus (of a male infant): pupa; pupula (of a female: these four also as terms of endearment). ☞ Icuncula puellaris, in some recent editions of Suet., Ner., 56, is a mere conjecture.

Quick answer

What is the Latin word for baby?
The usual Latin words for “baby” are īnfāns, pūpus, pūpulus; also pūpa, pūpula. 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.