Full-fledged (adjective)

Having achieved full development or maturity.

Origin:

The term "full-fledged" is derived from the verb "to fledge" which means to develop feathers and become capable of flight. so, "full-fledged" means fully developed or mature in some respect.

Examples:

1. She became a full-fledged member of the team after completing her training.
2. He is a full-fledged professional now, having worked in the field for many years.
3. The young bird had finally become a full-fledged flier.
4. She was a full-fledged expert in her field, having studied it for many years.
5. He had become a full-fledged member of the community after living there for many years.