1 undo the ties of; "They untied the prisoner"
] [ant: tie
2 cause to become loose; "undo the shoelace";
"untie the knot"; "loosen the necktie" [syn: undo
] [also: untying
]untying n : loosening
the ties that fasten something; "the tying of bow ties is an art;
the untying is easy" [syn: undoing