Yes, erupt is an action word, a verb; a word for the actof erupting.
Uitbars
Burst forth.
explode
burp
No, it means to blow up.
Example sentence - I hope the volcano does not erupt while I am visiting in Italy.
Sleep, dormant, inactive, not present, stalled, and calm are all considered as antonyms for the word erupt.
erupt
subside, hold back
There are a few antonyms for the word erupt. Some antonyms include contain, bottle, restrain, and shut. Some synonyms for this word are rupture, spew, gush, and burst.
eruption interruption