throw into great confusion or disorder; disturb in mind or make uneasy or cause to be worried or alarmed; "She was rather perturbed by the news that her father was seriously ill"
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"
perturbable
Hyphenation
per·tur·ba·ble
Pronunciation
Etymology
[ p&r-'t&rb ] (transitive verb.) 14th century. Middle English, from Middle French perturber, from Latin perturbare to throw into confusion, from per- + turbare to disturb; more at TURBID.