Found 2 items, similar to unbuckle.
English → English (WordNet) Definition: unbuckle unbuckle v : undo the buckle of; “Unbuckle your seat belt” [ant: buckle]
English → English (gcide) Definition: Unbuckle Unbuckle \Un*buc"kle\, v. t. [1st pref. un- + buckle.] To loose the buckles of; to unfasten; as, to unbuckle a shoe. “Unbuckle anon thy purse.” --Chaucer. [1913 Webster]