Synonym: boring, dreary, dull, humdrum, repetitious, tedious. Antonym: various. Similar words: up to now, autonomy, monolith, honor, donor, economy, economic, agronomy. Meaning: [mə'nɑtnəs /-'nɒ-] 
adj. 1. tediously repetitious or lacking in variety 2. sounded or spoken in a tone unvarying in pitch.
adj. 1. tediously repetitious or lacking in variety 2. sounded or spoken in a tone unvarying in pitch. 
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1, It's monotonous work, like most factory jobs.
2, The music became monotonous after a while.
3, Aircraft passed overhead with monotonous regularity .
4, She has a very monotonous voice; she should have it modulated.
5, Our team kept losing with monotonous regularity .
6, The crickets stridulated their everlasting monotonous meaningful note.
7, She thought life in the small town was monotonous.
8, New secretaries came and went with monotonous regularity.
9, Although her job is boring and monotonous, she likes the sense of predictability and security that it gives her.
10, The monotonous voice of the movement of the train lulled me to sleep.
11, Work on the production line is monotonous and lacks variety.
12, Her life is a monotonous routine.
13, Life took up its old monotonous routine.
14, For man and beast, it was slow,[http://sentencedict.com/monotonous.html] monotonous work.
15, It is backbreaking, monotonous and requires skill.
16, Life on the farm was slow and monotonous.
17, My job is monotonous, but at least I'm working.
18, The teacher's low monotonous voice almost put me to sleep.
19, Beyond the stables the monotonous sound of Varro's spade went on and on.
20, He was still hitting greens with monotonous regularity, but on the putting surface his touch had deserted him.
21, Rations were monotonous, sanitation was rudimentary, and many physical disorders resulted from the constant water and mud.
22, Life is not the game of life, or it will be without a single success; can't live without game, otherwise monotonous boring.
23, Closures and job losses are again being announced with monotonous regularity.
24, My job at the assembly line of the car factory is rather monotonous.
25, The fighters and their handlers are finding it as monotonous as anyone else.
26, Some are assigned different tasks, partly to prevent the work from becoming monotonous.
27, They could hear it far ahead of them - a rasping, monotonous cough.
28, If short and simple sentences dominate your writing, however, it may become monotonous.
29, They were officially internees, rather than prisoners, and life, although monotonous and full of deprivation, was not brutal.
30, In distant prospect I look forward to them greatly, as a break from the monotonous, lonely routine of writing.
More similar words: up to now, autonomy, monolith, honor, donor, economy, economic, agronomy, economics, economist, on occasion, astronomer, economically, heinous, indigenous, economic recovery, run out, enough, turn out, burn out, run out of, announce, motor, photo, go to bed, go together, a lot of, tone, protocol, go to sleep.