to the backbone

前置詞句

慣用表現

(idiomatic) Through and through; thoroughly; entirely.

日本語の意味

徹底的に / 完全に / 心底から

He was honest to the backbone, refusing to compromise his principles for personal gain.

彼は骨の髄まで正直で、私利のために自分の信念を曲げることを拒んだ。

意味（1）

(idiomatic) Through and through; thoroughly; entirely.

In temperament he was Dutch to the backbone — at least as we imagine Dutch.