You are fresh from a night journey, I understand, which is in itself a monotonous occupation.
"Oh, my night could not be called monotonous," said he, and laughed.
Now and then I hazarded some remark to break the monotony of the journey, but the colonel answered only in monosyllables, and the conversation soon flagged.
The most lay silent, but some muttered to themselves, and others talked together in a strange, low, monotonous voice, their conversation coming in gushes, and then suddenly tailing off into silence, each mumbling out his own thoughts and paying little heed to the words of his neighbour.
There are no more uses of "monotonous" in the book.
Show samples from other sources
The cafeteria food is good, but it gets monotonous after a while.