Definitions:

1. cause a celestial body to deviate from a theoretically regular orbital motion, especially as a result of interposed or extraordinary gravitational pull verb
   • The orbits of these stars were perturbed by the passings of a comet
2. disturb in mind or make uneasy or cause to be worried or alarmed verb
   • I was rather perturbed by the news that my father was seriously ill.
3. disturb or interfere with the usual path of an electron or atom verb
   • The electrons were perturbed by the passing ion
4. throw into great confusion or disorder verb
   • Fundamental Islamicists threaten to perturb the social order in Algeria and Egypt

Synonyms:

• derange
• throw out of kilter
• trouble

NearBy Words:

• perturbation
• perturbed
• perturbing