ichidan verb
A somewhat literary or poetic verb for kissing, often implying a gentle or romantic kiss. In everyday speech, キスする is more common.
彼はそっと彼女の頬に口付けた。
He gently kissed her on the cheek.
Standard kanji spelling.
Variant with づ in kana; commonly seen.
More common and casual than 口付ける, used in everyday conversation.
Compound of 口 (kuchi, 'mouth') + 付ける (tsukeru, 'to attach'). The reading くちづける is a rendaku form.