ichidan verb, transitive verb
Rare literary verb for holding a grudge or resentment. In modern Japanese, 恨む (うらむ) is far more common.
See also: 怨ずる
彼は昔のことを怨じているようだ。
He seems to bear a grudge about the past.
Derived from 怨ずる (えんずる), which is a literary verb meaning 'to resent'. The exact historical derivation is uncertain, but it is related to the noun 怨み (うらみ, 'grudge').