'Monotony' definitions:

Definition of 'monotony'

noun

The quality of wearisome constancy, routine, and lack of variety; "he had never grown accustomed to the monotony of his work"; "he was sick of the humdrum of his fellow prisoners"; "he hated the sameness of the food the college served" [syn: monotony, humdrum, sameness]

noun

Constancy of tone or pitch or inflection

Definition of 'Monotony'

From: GCIDE

Monotony \Mo*not"o*ny\, n. [Gr. ?: cf. F. monotonie. See Monotonius.]
1. A frequent recurrence of the same tone or sound, producing a dull uniformity; absence of variety, as in speaking or singing. [1913 Webster]
2. Any irksome sameness, or want of variety. [1913 Webster]
At sea, everything that breaks the monotony of the surrounding expanse attracts attention. --W. Irving. [1913 Webster]

Synonyms of 'monotony'

From: Moby Thesaurus

AF,
alliteration,
assonance,
audio frequency,
boredom,
broken record,
ceaselessness,
chime,
clockwork regularity,
consecutiveness,
constancy,
constant flow,
continualness,
continuity,
continuousness,
daily round,
dingdong,
drone,
dryness,
endlessness,
ennui,
equilibrium,
even pace,
even tenor,
featurelessness,
flatness,
frequency,
fullness,
fundamental,
fundamental tone,
gaplessness,
harmonic,
harping,
humdrum,
incessancy,
intonation,
invariability,
irk,
irksomeness,
jingle,
jingle-jangle,
jointlessness,
monologue,
monotone,
monotonousness,
near rhyme,
orderliness,
overtone,
partial,
partial tone,
pitch,
pitter-patter,
plenitude,
regularity,
repeated sounds,
repetitiousness,
repetitiveness,
rhyme,
sameliness,
sameness,
seamlessness,
singsong,
slant rhyme,
smoothness,
stability,
stale repetition,
steadiness,
steady state,
successiveness,
tedium,
the beaten track,
the daily round,
the round,
the squirrel cage,
the treadmill,
the weary round,
tone,
tonelessness,
treadmill,
trot,
unbrokenness,
undeviation,
undifferentiation,
uniformity,
unintermittedness,
uninterruptedness,
uninterruption,
unnecessary repetition,
unrelievedness,
unvariation,
wearisome sameness