He picked up the branch with an evil look in his eyes.

"I can't believe you!" said the ______________- person.

It just does not even make sense, ridiculous !

These are antonyms

Seeming to last forever; to go one and on

Piggy was ​ ___________ that he wasn't asked to go on the first expedition to explore the island.

impossible to understand or interpret

Attempting to avoid notice or attention, typically because of guilt or a belief that discovery would lead to trouble; secretive:

The way little kids walk when they are happy.

These are antonyms

Suggested, but not outright stated