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"restraint" is also used as a crossword clue. If that's what you saw, the answer is often inhibition (10 letters).
Definitions
the act of controlling by restraining someone or something
Word origin
From Middle English restreynte, from Old French restreinte; more at restrain.
Used in a sentence
“Make sure all the restraints are tight.”
“Try to exercise restraint when talking to your boss.”
“City will feel nonplussed when they review the tape and Pellegrini had to summon all his restraint in the post-match interviews.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Act of holding back”9 letters
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