untying

(noun) loosening the ties that fasten something. Synonyms: undoing, unfastening. Example: "The tying of bow ties is an art; the untying is easy."

(verb) undo the ties of. Synonyms: untie, unbrace, unlace. Example: "They untied the prisoner."

(verb) cause to become loose. Synonyms: untie, undo, loosen. Examples: "Undo the shoelace." "Untie the knot." "Loosen the necktie."