noun
1. an occurrence of control or strength weakening
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the relaxation of requirements
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the loosening of his grip
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the slackening of the wind
• Syn: ↑relaxation, ↑slackening
• Derivationally related forms: ↑slacken (for: ↑slackening), ↑loosen, ↑relax (for: ↑relaxation)
• Hypernyms: ↑weakening
• Hyponyms: ↑thaw
2. the act of making something less tight
• Syn: ↑laxation
• Ant: ↑tightening
• Derivationally related forms: ↑loosen
• Hypernyms: ↑alteration, ↑modification, ↑adjustment
• Hyponyms: ↑untying, ↑undoing, ↑unfastening
Useful english dictionary. 2012.