Synonyms of perturbation

perturbation

noun

ˌpər-tər-ˈbā-shən 

as in fear

an uneasy state of mind usually over the possibility of an anticipated misfortune or trouble

in her perturbation she kept calling her son, a freshman, to see if everything was all right at college

Synonyms & Similar Words

• fear
• concern
• anxiety
• worry
• unease
• concernment
• uncertainty
• agitation
• uneasiness
• fearfulness
• disquietude
• nervousness
• apprehension
• disquiet
• solicitude
• tension
• apprehensiveness
• discomfort
• care
• disturbance
• stress
• anxiousness
• sweat
• nervosity
• panic
• desperation
• tremor
• anguish
• agita
• distress
• dread
• doubt
• desperateness
• strain
• consternation
• jitters
• dismay
• discomposure
• vexation
• torment
• alarm
• upset
• angst
• distraction
• incertitude
• jumpiness
• suspense
• presentiment
• compunction
• edginess
• hand-wringing
• franticness
• cold feet
• foreboding
• misgiving
• qualm
• scruple

Antonyms & Near Antonyms

• unconcern
• content
• ease
• peace
• contentment
• quietude
• calm
• calmness
• serenity
• tranquility
• placidity
• relief
• quiet
• easiness
• peacefulness
• consolation
• solace
• comfort
• placidness
• tranquilness
• sereneness

Example Sentences

Recent Examples of perturbation

In the conscious state, says Miller, such perturbations only briefly affect how the brain behaves. — Veronique Greenwood, Time, 23 Mar. 2026

Rigid wings experienced abrupt destabilization, while passive soft wings without sensing and control struggled to recover from larger flow perturbations. — Etiido Uko march 09, New Atlas, 9 Mar. 2026

And yet, the system is so sensitive that a small perturbation, given enough time, can steer its trajectory in a dramatically different direction. — Antonios Mamalakis, The Conversation, 25 Feb. 2026

If no perturbation can interfere with the singularity, then this separation function should always stay small. — Quanta Magazine, 12 Nov. 2025