Question

antonyms of failure, defeat,weakened,wealthy

Answer 1

failure - pass
defeat - won
weakened - strength
wealthy - unhealthy

Answer 2

Antonym is the opposite meaning of the word that is in hand.

For example, the antonym of the word failure would be success which means the opposite of the meaning of failure.

Similarly, the antonym of the word "defeat" is "victory."

Likewise, the antonym for the word weakened is strengthened.

The antonym for the word "wealthy" could be pointed to the word poor.