through and through

US /θruː ænd θruː/
UK /θruː ænd θruː/
"through and through" picture
1.

完全に, 生粋の

completely; in every way

:
He is a New Yorker through and through.
彼は生粋のニューヨーカーだ。
The house was rotten through and through.
その家は完全に腐っていた。