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English definition of “untie”

untie

verb [T]     /ʌnˈtaɪ/ (present participle untying, past tense and past participle untied)
B2 to open a knot or something that has been tied with a knot: I untied my shoelaces and kicked off my shoes.Unfastening and opening
(Definition of untie verb from the Cambridge Learner's Dictionary © Cambridge University Press)

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