When it entered English it meant
"afterwards born"; since then it has come to mean "undersized"; what word is
it?
Etymology, Etymology, and more Etymology
as well as grammar, usage, euphemism, slang, jargon, semantics, linguistics, neologism, idiom, cant, and argot.

The critically-acclaimed board game
MooT
consists of tough questions about the nuances of the English language.
Answer:
puny
The word puny derives from the Old French puis né, afterwards born.
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