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Compare Old Norse leysa upp (“loosen up”).
Etymology from Wiktionary, CC BY-SA 4.0.
loosen up
Today it means: To become loose; to loosen; to relax (a muscle, etc.). Full definition →
Today it means: To become loose; to loosen; to relax (a muscle, etc.). Full definition →
Compare Old Norse leysa upp (“loosen up”).
Etymology from Wiktionary, CC BY-SA 4.0.