Final answer:
The green hunting cap worn by Ignatius in the novel represents his disconnect from reality and immersion in fantasies.
Step-by-step explanation:
The green hunting cap worn by Ignatius in the novel A Confederacy of Dunces by John Kennedy Toole symbolizes his disconnect from reality and immersion in fantasies.
The cap serves as a representation of Ignatius's eccentricity and personal quirks, as he often wears it in inappropriate settings and situations.
Furthermore, the cap reflects Ignatius's desire to distance himself from the mundane world and instead live in a world of his own imagination.