verb🔗ShareTo gradually decrease in intensity or tautness; to become slack."The pace slackened."energyphysicsconditionChat with AIVocabulary GamePractice Reading
verb🔗ShareTo make slack, less taut, or less intense."The runner's pace slackened as she neared the finish line. "actionconditionprocessenergyChat with AIVocabulary GamePractice Reading
verb🔗ShareTo deprive of cohesion by combining chemically with water; to slake."to slacken lime"chemistrysubstanceprocessChat with AIVocabulary GamePractice Reading