What is the adjective form of quit?

Answer 1

There is no adjective form of the verb "to quit" normally used as a synonym of "resigned." The word quitted (past participle) exists, but is virtually never used. The present participle, quitting, may be seen as an adjective (The quitting members of the team were shunned by other students).

The use of quit as an adjective (quit of his responsibility) is practically archaic.

Answer 2

There are many synonyms for the word quit. These include abandon, leave, take a walk, resign, surrender, relinquish, renounce, give up, forsake, desert, and drop out.