untie

Untie is a verb meaning to undo or loosen a knot, binding, or other fastened connection. It is the opposite of tie and is used for ropes, cords, shoelaces, bags, and other items that have been secured by tying. The form is regular: untie (present), unties (third person singular), untied (past and past participle), untying (present participle). Etymology: The word is formed from the prefix un- attached to tie and has appeared in English since the Middle English period.

In practical use, untie describes returning a bound object to a free state and can refer to both simple and complex knots. Some knots are designed to be easy to untie after use, while others jam under load, creating additional difficulty.

Techniques for untangling or undoing knots include locating the free end and working from that point, relaxing or loosening successive turns rather than applying force to the whole knot, and using moisture to reduce friction on some materials. For tightly jammed knots, a slender tool can help loosen windings, or the knot may need to be reset to an easier configuration before attempting to untie again. If a knot cannot be safely untied and the rope or line is under load or damaged, it should be released or cut to prevent failure.

Untie is a common term in everyday life, nautical contexts, climbing, and crafts, reflecting the close relationship between tying and untying skills.