'taru' adjective, adverb taking the と particle

Archaism.
  1. having fun, rejoicing.

Variations

Pronunciation Kanji Kana Is Common
怡々 いい
怡怡 いい

Contained Kanji Breakdown

rejoice, enjoy
イ よろこ.ぶ (Kentei 1)
heart, standing heart radical variant (no. 61)
シン こころ
pedestal, a stand, counter for machines and vehicles
ダイ うてな われ (2nd, N4)
I, myself, katakana mu radical (no. 28)
シ ボウ ム (Kentei 1)
mouth
くち コウ ク (1st, N4)
repeated kanji symbol