This dissertation argues that the relationship between comedy and the Bildungsroman is symbiotic rather than subversive, indicative of a fundamental affinity between mode and genre. The Bildungsroman is a genre supremely anxious about the social, professional, and romantic definition its heroes seek, an anxiety that leaves it highly vulnerable to the incursions of comedy. Definition is about limits, ends, bounds, and stability. I argue that comedy attacks all these things mercilessly, and finds in the Bildungsroman's preoccupation with definition, limits, and bounds a fertile ground for its own forces of indefinition, limitlessness, and boundlessness. Therefore, small, sometimes trivial examples of comic indefinition can be traced back to the larger definitional stakes of the Bildungsroman form. The comic twentieth-century novels I take up, Evelyn Waugh's Decline and Fall and The Loved One, Samuel Beckett's Murphy and Company, and Philip Roth's Portnoy's Complaint and Sabbath's Theater, feed on the Bildungsroman's ever-present, latent comedy. Comic Bildungsromans, anti-Bildungsromans, parodic Bildungsromans: a rose is a rose is a rose. Whatever the name, the comic Bildungsroman doesn't so much distort the image of the Bildungsroman as reflect its truest form.