⚡ A disruption 😟 Mental worry 🪐 A motion change

perturbance

1 8.2

A feeling of worry or upset that makes you restless

noun
/pərˈtərbəns/

: inquietud

The unexpected changes at work caused a perturbance in his usual routine, leaving him anxious and restless.

Examples

His constant worrying about the upcoming exam created a perturbance in his otherwise calm demeanor.
After receiving the disappointing news, she felt a deep sense of perturbance that lingered all day.
But my reply is cause for a gnawing perturbance, for I know that I cannot recall the time of her arrival, nor the duration of her stay, nor the hour of her departure.

Fiction book (1996)

Synonyms

agitation

vsperturbance

14 5.1

A feeling of nervous worry and restlessness

is more about worry and inner emotional upset

disturbance

vsperturbance

Specialized

11 4.1

A problem that makes someone feel worried or emotionally upset

focuses on internal agitation and worry rather than broad disorder

perturbation

vsperturbance

Formal

1 7.9

A strong feeling of worry or nervousness

has identical meaning but is a variant form

fluster

vsperturbance

1 4.9

A short time of nervous confusion that makes you forget things

emphasizes worry and emotional unrest rather than confusion

fantods

vsperturbance

Archaic

1 9.9

A feeling of nervousness and restlessness

focuses on worry and agitation rather than mere restlessness

Antonyms

serenity

55 4.4

A calm, peaceful feeling without worry

calmness

11 2.7

A state without strong feelings or worry in your mind

How Agitated

panic

424 2.7

distress

253 3.6

perturbance

1 8.2

agitation

14 5.1

worry

378 1.0

unease

21 4.4

Surface Forms

perturbance singular

perturbances plural

Morphology

perturbance = perturb (transparent) = perturb + ance

Clear nominalization from 'perturb' yielding a noun for a state of disturbance or agitation.

Etymology

Perturbance comes from Latin parts per- 'completely' and turbare 'to disturb', a root you see in disturb and turbulent. So a perturbance can mean a strong upset or worry that disturbs someone's mind.