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Related to perturbable: personate
tr.v. per·turbed, per·turb·ing, per·turbs
1. To disturb or confuse; make uneasy or anxious: I was perturbed by his off-color remarks.
a. To cause (a system) to become altered or imbalanced from a normal state: volcanic eruptions that perturbed the climate.
b. Physics & Astronomy To cause perturbation in (the orbit of a celestial body, for example) by gravitational interaction.
[Middle English perturben, from Old French perturber, from Latin perturbāre : per-, per- + turbāre, to throw into disorder (from turba, confusion, perhaps from Greek turbē).]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.