also: いっぽんぢょうし
na-adjective, noun which may take the genitive case particle 'no', noun
monotonous; lacking variety; one-note
Describes speech, music, or a way of doing things that is flat, unchanging, and without variation. Often used critically.
彼のスピーチは一本調子で、聴衆はすぐに飽きてしまった。
His speech was monotonous, and the audience quickly got bored.
This song is monotonous; the same rhythm continues throughout.