full-grown
adjectiveUK /ˌfʊlˈɡrəʊn/
US /ˌfʊlˈɡroʊn/
A full-grown animal or person is as big as it will ever get.
The puppy is now a full-grown dog.
SYNONYMS
OTHER MEANINGS
2. Having reached the final size or stage of development.
A full-grown oak tree can be very tall.
3. No longer young; fully adult.
A full-grown man walked into the room.
4. Complete in growth, not needing to grow more.
The full-grown cat slept on the warm windowsill.