Kanji info: 添い寝 — 和英／英和辞典

添

annexed, accompany, marry, suit, meet, satisfy, attach, append, garnish, imitate

On'yomi: テン (ten)

Kun'yomi: そ.える (so.eru)、そ.う (so.u)

Radical components: ノ一二大心汁

Stroke order

寝

lie down, sleep, rest, bed, remain unsold

On'yomi: シン (shin)

Kun'yomi: ね.る (ne.ru)、ね.かす (ne.kasu)、い.ぬ (i.nu)、みたまや (mitamaya)、や.める (ya.meru)

Radical components: ヨ冖又宀爿

Stroke order