2 uses
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Definition
lacking in variety — typically boring
- The sky became quite gray and, along with it, the whole countryside seemed to lose its color and assume the same monotonous tone.p. 22.2
- Mile after mile after mile after mile, and everything became graver and more monotonous.p. 22.7
There are no more uses of "monotonous" in The Phantom Tollbooth.
Typical Usage
(best examples)