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"fatigued" is also used as a crossword clue. If that's what you saw, the answer is often weary (5 letters).
Definitions
Very tired or drained of energy.
Used in a sentence
“After the marathon, the runners looked utterly fatigued.”
“She became mentally fatigued after hours of study.”
“physically fatigued”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Very tired”8 letters
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