Added 9 October 2026 fledgeling noun Categories: PeopleAnimalsObscure Words noun ! Definition from WordNet 3.1, Princeton University. More about fledgeling at Wordnik → Where our words come from → Any new participant in some activity. Young bird that has just fledged or become capable of flying. adjective (of a young bird) having acquired its flight feathers. a fledgling robin Related Words: fledglingneophytefreshmannewcomermatureentrantstarterfledgednurselinglicelinghirlingfleabeetle Back to today's word