Antonyms for the term "full-fledged" include "incomplete," "unfinished," "half-baked," "inchoate," "incipient," "nascent," and "embryonic." These words all suggest that something is not yet complete or fully developed. "Incomplete" and "unfinished" imply that there is something missing or still in progress, while "half-baked" suggests that something is poorly thought-out or incomplete. "Inchoate" and "incipient" suggest that something is in its early stages of development, while "nascent" and "embryonic" imply that something is just beginning to take shape. These antonyms offer a clear contrast to the concept of full-fledged, which suggests something that is fully developed and mature.