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Liable to be perturbed or agitated; liable to be disturbed or disquieted.

Disturbance; perturbation. [R.] "Perturbance of the mind." Sharp.

A disturbance in the regular elliptic or other motion of a heavenly body, produced by some force additional to that which causes its regular motion; as, the perturbations of the planets are caused by their attraction on each other. Newcomb.

Tending to cause perturbation; disturbing. Sir J. Herschel.

Agitated; disturbed; troubled. Shak. -- Per*turb"ed*ly, adv.

To trouble; to disturb; to annoy; to harass with petty vexations. We are pestered with mice and rats. Dr. H. More. A multitude of scribblers daily pester the world. Dryden.

strial isopod of the genus Armadillo, having the habit of rolling itself into a ball when disturbed. Called also pill wood louse.

Pleased; contented; unruffied; undisturbed; serene; peaceful; tranquil; quiet; gentle. "That placid aspect and meek regard." Milton. "Sleeping . . . the placid sleep of infancy." Macaulay.

To poke; to push; also, to disturb; to confuse; to bother. [Prov. Eng.] Halliwell.

s. (b) That which in ordinary natural sequence produces a specific result, no independent disturbing agencies intervening. -- Proximate principle (Physiol. Chem.), one of a class of bodies existing ready formed in animal and vegetable tissues, and separable by chemical analysis, as albumin, sugar, collagen, fat, etc.…

Fastidious; squeamish; delicate; easily disturbed; unsettled; ticklish. " A queasy question." Shak. Some seek, when queasy conscience has its qualms. Cowper.

Free from noise or disturbance; hushed; still.

Peace or tranquillity of mind; calmness; indifference; apathy; dispassion; indisturbance; inaction.

Without tumult, alarm, dispute, or disturbance; peaceably; as, to live quietly; to sleep quietly.

The quality or state of being quiet; freedom from noise, agitation, disturbance, or excitement; stillness; tranquillity; calmness. I would have peace and quietness. Shak.

temporary expedient. [Colloq.] -- To raise Cain, or To raise the devil, to cause a great disturbance; to make great trouble. [Slang]

, a motive, reason, or ground of explanation; as, he referred the phenomena to electrical disturbances. To refer one's self, to have recourse; to betake one's self; to make application; to appeal. [Obs.] I'll refer me to all things sense. Shak.

or into barbarism; -- sometimes in a good sense; as, to relapse into slumber after being disturbed. That task performed, [preachers] relapse into themselves. Cowper.

Hence, freedom from everything which wearies or disturbs; peace; security. And the land had rest fourscore years. Judges iii. 30.

Turned upside down; greatly disturbed. [Obs.] He found the sea diverse With many a windy storm reverse. Gower.