Arousing no interest or curiosity
Having but one tone
Jonny's voice was coldly monotonous but soft.
The notes of the blackbird are rich and full, but monotonous as compared with those of the song-thrush.
Between the Lot and the Aveyron is a belt of causses or monotonous limestone table-lands, broken here and there by profound and beautiful gorges - a type of scenery characteristic of Aveyron.
"I know, I know," answered Prince Vasili in his monotonous voice.
As professional story-tellers many Moors are remarkable, but the national music is monotonous and not very harmonious.