- to disturb or disquiet greatly in mind; agitate.
- to throw into great disorder; derange.
- Astronomy. to cause perturbation in the orbit of (a celestial body).
Origin of perturb
Synonyms for perturbSee more synonyms for on Thesaurus.com
Antonyms for perturb
Related Words for unperturbablepossessed, still, cool, quiet, poised, confident, easy, easygoing, levelheaded, nonchalant, peaceful, placid, sanguine, self-possessed, serene, sure, temperate, together, tranquil, unflappable
Examples from the Web for unperturbable
Historical Examples of unperturbable
- to disturb the composure of; trouble
- to throw into disorder
- physics astronomy to cause (a planet, electron, etc) to undergo a perturbation
Word Origin for perturb
late 14c., from Old French perturber "disturb, confuse" (14c.) and directly from Latin perturbare "to confuse, disorder, disturb," especially of states of the mind, from per- "through" (see per) + turbare "disturb, confuse," from turba "turmoil, crowd" (see turbid). Related: Perturbed; perturbing.