The word fledgeless means to be without feathers and unready to fly, often referring to a young bird. Some synonyms for fledgeless include immature, undeveloped, unformed, inexperienced, novice, and unprepared. These words all imply a lack of readiness or experience, whether it be in terms of physical growth or mental knowledge and skill. Other synonyms for fledgeless include fledgling, hatchling, and chick, which are more specific to young birds in particular. Overall, fledgeless and its synonyms all capture the idea of being in an early stage of development and not quite ready for full independence or success.