Monotone

Monotone refers to a sound, for example music or speech, that has a single unvaried tone. See: pure tone and monophony.

Monotone or monotonicity may also refer to:

In economics

 * Monotone preferences, a property of a consumer's preference ordering.
 * Monotonicity (mechanism design), a property of a social choice function.
 * Monotonicity criterion, a property of a voting system.
 * Resource monotonicity, a property of resource allocation rules and bargaining systems.

In mathematics

 * Monotone class theorem, in measure theory
 * Monotone convergence theorem, in mathematics
 * Monotone polygon, a property of a geometric object
 * Monotonic function, a property of a mathematical function
 * Monotonicity of entailment, a property of some logical systems
 * Monotonically increasing, a property of number sequence

Other uses

 * Monotone (software), an open source revision control system
 * Monotonic orthography, simplified spelling of modern Greek
 * The Monotones, 1950s American rock and roll band
 * Quantifier monotonicity, in formal semantics
 * "Monotone", a song by Yoasobi for 2024 animated film Fureru