Select the most appropriate antonym of the word.

ILLICIT

Lawful

The most appropriate antonym of the word illicit is lawful.

• Illicit means "not permitted by law or custom."
• Lawful means "allowed by law or custom."

The other words do not have the same meaning as illicit, so they are not its antonyms.

• Prohibited means "forbidden by law or custom."
• Illegal means "contrary to or forbidden by law."
• Illegible means "not able to be read."