怡い然ぜん

adverb taking the 'to' particle, taru-adjective

delightful; enjoyable

Archaic literary word describing a state of being pleased or content, often used adverbially with と or as a taru-adjective.

• 彼かれは怡い然ぜんとして微笑ほほえんだ。

  He smiled delightedly.