- A frequent recurrence of the same tone or sound,
producing a dull uniformity; absence of variety, as in speaking or
singing. - Any irksome sameness, or want of variety.
Meaning of 'monotony' (Princeton's WordNet)
1 . monotony
[ n]
Meaning (1): - the quality of wearisome constancy, routine, and lack of variety
Example in sentence:
he had never grown accustomed to the monotony of his work;
he hated the sameness of the food the college served;
he was sick of the humdrum of his fellow prisoners