Definition of Perturb

1. Verb. Disturb in mind or make uneasy or cause to be worried or alarmed. "The bad news will perturb him"; "She was rather perturbed by the news that her father was seriously ill"

Exact synonyms: Cark, Disorder, Disquiet, Distract, Trouble, Unhinge
Specialized synonyms: Vex, Worry
Generic synonyms: Disturb, Trouble, Upset
Derivative terms: Disquiet, Disquiet, Distraction, Perturbation, Perturbation, Trouble, Trouble

2. Verb. Disturb or interfere with the usual path of an electron or atom. "The electrons were perturbed by the passing ion"
Generic synonyms: Deviate
Derivative terms: Perturbation, Perturbation

3. Verb. Cause a celestial body to deviate from a theoretically regular orbital motion, especially as a result of interposed or extraordinary gravitational pull. "The orbits of these stars were perturbed by the passings of a comet"
Generic synonyms: Deviate
Derivative terms: Perturbation

4. Verb. Throw into great confusion or disorder. "Fundamental Islamicists threaten to perturb the social order in Algeria and Egypt"
Exact synonyms: Derange, Throw Out Of Kilter
Generic synonyms: Disarray, Disorder
Derivative terms: Derangement, Perturbation, Perturbation

Definition of Perturb

1. v. t. To disturb; to agitate; to vex; to trouble; to disquiet.

Definition of Perturb

1. Verb. To disturb; to bother or unsettle. ¹

2. Verb. (physics) To slightly modify the motion of an object. ¹

3. Verb. (astronomy) To modify the motion of a body by exerting a gravitational force. ¹

4. Verb. (mathematics) To modify slightly, such as an equation or value. ¹

¹ Source: wiktionary.com

Definition of Perturb

1. to disturb greatly [v -ED, -ING, -S]

Lexicographical Neighbors of Perturb

pertinences
pertinencies
pertinency
pertinent
pertinently
pertly
pertness
pertnesses
pertook
pertransient
pertrochanteric fracture
perts
pertsevite
pertuisan
pertuisans
perturb (current term)
perturbability
perturbable
perturbance
perturbances
perturbate
perturbated
perturbates
perturbating
perturbation
perturbational
perturbations
perturbative
perturbatively
perturbativity

Literary usage of Perturb

Below you will find example usage of this term as found in modern and/or classical literature:

1. Webster's Elementary-school Dictionary: Abridged from Webster's New by Noah Webster (1914)
"perturb, upset, discompose, agitate. — Dis- TUBB^ perturb. To disturb is to throw into either physical or mental confusion or disorder; as, do not disturb ..."

2. An Etymological Dictionary of the English Language by Walter William Skeat (1893)
"Lat. perturbare, to disturb greatly. — Lat. per, thoroughly ; and turbare, to disturb, from turba, a crowd. See Per- and Turbid. Der. perturb-at-ion, ..."

3. The Divine Legation of Moses Demonstrated by William Warburton (1837)
"Atheism," saith his Lordship, "did never perturb states; for it makes men wary of themselves, as looking no farther: and we see, the times inclined to ..."

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