Vocabulary
Form
to hum (a tune); to sing to oneself; to croon
verb
vt
freq #41
Example sentences
母（はは）は台所（だいどころ）でせっせと料理（りょうり）しながら歌（うた）を口（くち）ずさんでいた。
Mother hummed to herself as she went about her cooking in the kitchen.