A common but insecure knot, often formed by tying a reef knot incorrectly. Used in everyday contexts like tying shoelaces or packages, but not for safety-critical applications.
I accidentally tied my shoelaces in a granny knot.
Be careful, as a granny knot comes undone easily.
Compound of 縦 (tate, 'vertical') and 結び (musubi, 'knot'), referring to the orientation of the knot's loops. The exact historical derivation is uncertain.