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1 perturb

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.

synonyms: cark, disorder, disquiet, distract, trouble, unhinge.

Roget 61: derange; disarrange, misarrange; displace, misplace; mislay, discompose, disorder; deorganize, discombobulate, disorganize; embroil, unsettle, ... show more

Roget 824: excite, affect, touch, move, impress, strike, interest, animate, inspire, impassion, smite, infect; stir the blood, fire the blood, ... show more

Dutch: uit zijn evenwicht brengen

2 perturb

Disturb or interfere with the usual path of an electron or atom.

3 perturb

Cause a celestial body to deviate from a theoretically regular orbital motion, especially as a result of interposed or extraordinary gravitational pull.

4 perturb

Throw into great confusion or disorder:
— Fundamentalists threaten to perturb the social order.

synonyms: derange, throw out of kilter.

Moby thesaurus: abash, addle, addle the wits, afflict, agitate, ail, alarm, ball up, be the matter, beat, beat up, becloud, bedazzle, befuddle, beset, bewilder, bother, bug, burden, churn ... show more.

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