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"infertile" is also used as a crossword clue. If that's what you saw, the answer is often barren (6 letters).
Definitions
incapable of reproducing
Word origin
From Middle French infertile, from Late Latin infertilis.
Used in a sentence
“The soil was too infertile to grow crops.”
“The couple sought medical advice for infertile conditions.”
“Deserts are often infertile and unable to support vegetation.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Unable to reproduce”9 letters
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