Un-lashing is a term used to describe the act of removing or releasing the lashings, ropes or ties that bind objects together. Some antonyms for un-lashing are securing, fastening, tying, tethering, and binding. These words represent actions that involve holding something in place, rather than disconnecting or freeing it. Whereas un-lashing represents a separation of something previously attached, securing or fastening signifies a joining or attachment. For example, you may use un-lashing to release a strapped-in object from a moving truck, but you would use securing to keep the same object stable during transportation. All in all, these antonyms present a variety of ways to keep objects secure, either connected or detached, depending on the situation.