What is an antonym for herald?

The best antonym for "herald" depends on the context, but here are some options:

For "herald" as a noun meaning a messenger:

* Suppressor

* Silencer

* Concealer

* Obscurer

For "herald" as a verb meaning to announce or signal:

* Conceal

* Hide

* Suppress

* Silence

* Ignore

* Disregard

For "herald" as a verb meaning to usher in or introduce:

* End

* Terminate

* Conclude

* Dismiss

* Reject

The best antonym will depend on the specific meaning of "herald" in the context you're using it.