ほぞ
hozō kamu

Godan Verb (mu)
Idiomatic Expression

1. to regret bitterly; to be very sorry (for); to bite one's navel — literal

彼女 かのじょ しゅうとめ にさわるようなことを わなければよかったと へそ んだ。
kanojowa shūtono kini sawaru yōna kotō iwanakereba yokattato hozō kanda
She bitterly regretted having said something that displeased her mother-in-law.
Other forms: