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Definition of perturb

perturb

/pərˈtɜːrb/
per · turb

Adjective:perturbable
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Past Simple:perturbed
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Past Participle:perturbed
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Present Participle:perturbing
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perturb Lexical Profile

perturb Game Scores & Validity

• verb

1

To make someone anxious, unsettled, or mentally uneasy; to disturb the composure of.

Example

"The sudden changes to the project timeline did not seem to perturb the experienced director."


2

To subject a physical system, celestial orbit, or regular process to a secondary influence that alters its normal state or path (especially in physics, astronomy, and mathematics).

Example

"The gravitational pull of Jupiter is strong enough to perturb the orbits of nearby asteroids."

Synonyms
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Antonyms
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• Rhymes for perturb

Word Origin & Etymology

Borrowed in the late 14th century from Old French perturber, which derives from Latin perturbare ('to confuse or throw into disorder'), formed from the intensive prefix per- ('thoroughly') and turbare ('to disturb or agitate'), from turba ('turmoil, crowd').

Usage Trend

Historical frequency of usage in published text.

180019102020

Cite this Entry


Wordmom. (2026). Definition of Perturb. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/perturb
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