to the core
US /tə ðə kɔr/
UK /tə ðə kɔr/

1.
fino al midollo, fino in fondo
completely; thoroughly; to the greatest extent
:
•
He was rotten to the core.
Era marcio fino al midollo.
•
She was a New Yorker to the core.
Era una newyorkese fino al midollo.
: