fluctuator

Something that varies

A fluctuator is something or someone that fluctuates—varies irregularly or wavers between states.

The term appears in technical contexts for devices that introduce or measure variation: a voltage fluctuator, a random fluctuator in the circuit.

More loosely, it describes anything prone to instability: He's a fluctuator when it comes to commitments.

device

oscillator

Cyclic signal generator

transistor · potentiometer · thyristor · rheostat · attenuator · stabilizer · damper · controller · servo · actuator

oscillation

wave

Oscillating motion through medium

cycle · periodicity · harmonic · resonance · pulsation · undulation · ripple · swing · tremor · surge

variability

instability

Tendency toward unpredictable change

changeability · irregularity · variation · deviation · drift · variance · randomness · jitter · noise · uncertainty

regulation

stabilization

Process of becoming steady

normalization · balancing · fine-tuning · adjustment · compensation · correction · damping · smoothing · leveling · moderation

Opposites
stability/variability

fluctuatorconstant

Fixed, unvarying quantity

stabilizer · steady state · invariant · fixed point · anchor

regularity of change

fluctuatorregulator

Device maintaining steady output

steadier · balancer · moderator · damper · leveler

decisiveness vs. wavering

fluctuatorstalwart

Unwavering loyal supporter

constant · loyalist · true believer · rock · pillar

Phrases
Family

fluctuate, fluctuation, fluctuating, fluctuations, fluctuated, fluctuates, fluctuators

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