noun, noun or participle which takes 'suru', intransitive verb
late completion; late bloomer; succeeding later in life
Often used in the set phrase 大器晩成 (great talents mature late). As a standalone noun or する-verb, it refers to achieving something or blooming later than usual.
彼は大器晩成型で、40代になってから成功した。
He is a late bloomer and succeeded only after reaching his forties.
This writer bloomed late and published his first novel at age 60.