What is an antonym for the word anchor?

There isn't a single perfect antonym for "anchor" as its meaning depends on the context. However, here are some possibilities depending on the intended meaning:

If "anchor" means "to secure or hold firmly":

* Release

* Loosen

* Untie

* Free

If "anchor" means "a person or thing that provides stability or support":

* Destabilizer

* Unifier

* Disruptor

* Chaos

If "anchor" means "a heavy object used to hold a ship in place":

* Sail (in the sense of moving freely)

* Drift

* Move

If "anchor" means "a person who stays in a certain place":

* Wanderer

* Nomad

* Traveler

If "anchor" means "a newscaster or host":

* Guest (in the sense of a temporary presence)

* Contributor

* Reporter

To find the best antonym, consider the specific context in which "anchor" is being used.