There is no true antonym for a word like 'plagued' as it depends on the context of how it is used. It is a descriptive term, basically something annoying, bad or even dangerous. There are other words that could be used (synonyms) to describe this condition and some of these will have suitable antonyms.
The opposite of 'plagued' might be 'ignored, improved or bettered'.
The question is also wrongly worded. 'Antonyms' is plural. "What are some antonyms for plagued?" would be more correct.
pestilence
This cold has plagued me for two weeks!
The disease plagued the countryside.
Example for the verb: The project was plagued with delays.Example for the adjective: The plagued villagers formed a posse to track down the band of robbers.
Antonyms
antonyms
Infested.
antonyms
what isbrief of antonyms
What are the antonyms for cavernous
antonyms
Antonyms for "die" include:live