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"need" is also used as a crossword clue. If that's what you saw, the answer is often require (7 letters).
Definitions
To require something or lack something necessary.
Word origin
From Middle English neden, from Old English nēodian.
Used in a sentence
“There's no need to speculate; we can easily find out for sure.”
“She grew irritated with his constant need for attention.”
“Our needs are not being met.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer2 curated clues
01“Essential requirement”4 letters
02“Lack something essential”4 letters
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