monotonic
Always one direction
Monotonic describes something that stays on one course without variation.
In mathematics, a monotonic function either always increases or always decreases—it never reverses direction.
The term extends to any unchanging pattern: a monotonic diet of rice and beans, the monotonic hum of the air conditioner.
A monotonic voice lacks inflection, holding the same pitch throughout.
The word shares territory with monotonous but emphasizes consistency rather than tedium.
Fixed, unvarying quantity
- uniformIdentical throughout
- consistentNot varying or contradicting
- unvaryingRemaining the same always
- unchangingNot varying at all
continuous · even · level · stable · regular · invariable · uninterrupted · persistent
Becoming greater in amount
- decreasingBecoming smaller or fewer
- nondecreasingNever getting smaller
- functionPurpose or duty
- sequenceOrdered succession of elements
convergence · bounded · linear · slope · derivative · integral · continuous · limit
Frequency of sound
- inflectionWord form alteration
- intonationPitch variation in speech
- flatLacking vertical variation
- droningSustained monotonous sound
unchanging · level · expressionless · voice · speech · drone · humming · chanting
Failing to engage interest
- tediousBoring through length
- droningSustained monotonous sound
- unvariedWithout any change
- repetitiveMarked by recurrence
flat · lifeless · humdrum · wearisome · uninflected · plodding · colorless · unstimulating
constant
Fixed, unvarying quantity
- uniformIdentical throughout
- consistentNot varying or contradicting
- unvaryingRemaining the same always
unchanging · continuous · even · level · stable · regular · invariable · uninterrupted · persistent · unwavering
increasing
Becoming greater in amount
- decreasingBecoming smaller or fewer
- nondecreasingNever getting smaller
- functionPurpose or duty
sequence · convergence · bounded · linear · slope · derivative · integral · continuous · limit · inequality
pitch
Frequency of sound
- inflectionWord form alteration
- intonationPitch variation in speech
- flatLacking vertical variation
droning · unchanging · level · expressionless · voice · speech · drone · humming · chanting · recitation
boring
Failing to engage interest
repetitive · flat · lifeless · humdrum · wearisome · uninflected · plodding · colorless · unstimulating · unexciting
- sequencessequence, arithmetic, series, geometric, progressions
- function propertiesdomain, range, continuity, derivative, limit
- interpolationlinear, bilinear, cubic, spline, interpolation
- math termsnumbers, plus or minus, linear growth, square, operand
- Greek lettersalpha, beta, gamma, delta, epsilon
- functionslinear function, function, quadratic function, polynomial function, exponential function
monotonicoscillating
Swinging back and forth
fluctuating · alternating · variable · erratic · irregular
- in a monotone
- monotone voiceSpeech lacking pitch variation
- monotone speechUnvarying pitch while talking
monotone, monotony, monotonous, monotonously, monotones, monotoned, monotonousness, monotonies