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perturbative

[pur-ter-bey-tiv, per-tur-buh-tiv] /ˈpɜr tərˌbeɪ tɪv, pərˈtɜr bə tɪv/
adjective
1.
having a tendency to perturb; disturbing.
Origin of perturbative
1630-1640
1630-40; < Late Latin perturbātīvus. See perturbation, -ive
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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