Synonyms for Fully fledged:

n.

grown, full-blown, growth, infantile, fully grown, immature, developed, full-grown. fully fledged (noun)
fledged, experienced, full-fledged, mature.

Other synonyms:

fully grown, full-grown, grown. full-blown, developed, infantile. growth. Other relevant words:
fully grown, full-grown, grown.