to soak · to permeate · to immerse

He was completely engrossed in the book.

My cousin is so steeped in schoolwork that his friends call him bookworm.

He is totally immersed in family life and has no wish to work.

In the evening quiet, we enjoy the song of the euphonious nightingale.

They not only washed off the sweat, dirt and cares of the day in the hot water, but also enjoyed gossiping about everyday affairs.