1. (n.) The act of besieging.

2. (n.) The state of being besieged; -- used specifically of a person beset by a spirit from without.

absorbed attention absorption abstraction abulia alienation anxiety anxiety equivalent anxiety state apathy application bedevilment bewitchery bewitchment captivation catatonic stupor complex compulsion concentration contemplation conviction deep study deep thought dejection depression detachment elation emotionalism enchantment engagement engrossment entrancement euphoria fascination fixation fixed idea folie du doute hang-up hypercathexis hypochondria hysteria hysterics idee fixe illusion immersion indifference insensibility intentness involvement irresistible impulse lethargy mania maya meditation melancholia mental distress monomania morbid drive obsessive compulsion passion pathological indecisiveness phobia possession preoccupation prepossession profound thought psychalgia psychomotor disturbance rapt attention ruling passion single-mindedness spirit control studiousness study stupor submersion thing tic twitching unresponsiveness witchery withdrawal