1. (

• perturb ,
• unhinge ,
• disquiet ,
• trouble ,
• cark ,
• distract ,
• 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" ;

2. (

• perturb ,

) disturb or interfere with the usual path of an electron or atom; "The electrons were perturbed by the passing ion" ;

3. (

• perturb

) 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" ;

4. (

• perturb ,
• derange ,
• throw_out_of_kilter

) throw into great confusion or disorder; "Fundamentalists threaten to perturb the social order" ;