agitation : the act or process of being moved with an irregular, rapid, or violent action : a shaken state of emotions; inner unrest, uneasiness, or apprehension chaos : a state of extreme confusion and disorder depression : a hollow or depressed area; downward or inward displacement : a reduction in functional activity, amount, quality, or force : a mental state of altered mood characterized by feelings of sadness, despair, and discouragement disequilibrium : loss of equilibrium attributable to an unstable situation in which some forces outweigh others disorder : a derangement or abnormality of function; a morbid physical or mental state imbalance : the state of being out of equilibrium or out of proportion: asymmetry, dissymmetry instability : the tendency to behave in an unpredictable, changeable, or erratic manner: emotional instability tremor : a trembling or shaking usually from physical weakness, emotional stress, or disease : a quivering or vibratory motion: a discrete small movement following or preceding a major seismic event : a feeling of uncertainty or insecurity unease : a feeling of anxiety that makes you tense and irritable : a vague unpleasant emotion that is experienced in anticipation of some (usually ill-defined) misfortune : an inability to rest or relax or be still unreason : irrationality or madness : something that lacks or is contrary to reason : lack of order; chaos upheaval : extreme agitation or disorder : radical change quake : an earthquake : a trembling or tremulous agitation