Sounded or spoken in an unvarying tone.(adjective)
Tediously repetitious or lacking in variety. See Synonyms at boring.(adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "monotonous" in a sentence
"This man says the city is much cooler in summer than the country: that spring visits the city earlier: that what we call the monotonous row of houses in a city street is far more beautiful than the irregularity of the country."
"If we could only carry that clear conviction with us day by day into the little things of life, what different things these, which we call the monotonous trifles of our daily duties, would become!"
"Chopin he has the courage to write: "Had Professor Niecks applied the term monotonous to No. 12 we should have been more ready to indorse his opinion, as, although great power is manifested, the very 'sameness' of the form of the arpeggio figure causes a certain amount of monotony to be felt."