Final answer:
The antonyms of relinquish are oppose, suppress, and oppress. The synonyms of relinquish are give up, yield, and abandon.
Step-by-step explanation:
Antonyms of relinquish include oppose, suppress, and oppress.
Synonyms of relinquish include give up, yield, and abandon.
For example, if someone opposes a decision, they are going against it, which is the opposite of relinquishing or giving up on it.