godan verb (-ru), intransitive verb
soak into; seep into; permeate
Describes liquid soaking deeply into a material, or a feeling/sensation penetrating one's heart or mind. Often used figuratively for emotions or cold.
See also: 染み込む
雨が地面に染み入る。
The rain soaks into the ground.
彼の優しい言葉が心に染み入った。
His kind words sank deep into my heart.