Dictionary / Vocabulary / 口ずさむ
くちずさむ
to hum (a tune); to sing to oneself; to croon
JLPT N1 Also written 口遊む、口吟む
母は台所でせっせと料理しながら歌を口ずさんでいた。
Mother hummed to herself as she went about her cooking in the kitchen.
トムは皿を洗いながら、歌を口ずさんだ。
Tom sang a song while he washed the dishes.
トムはよく哀しい歌を口ずさんでるよ。
Tom is frequently humming sad songs.