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n.
the action or reaction of something (as a machine or substance) under specified circumstances; "the behavior of small particles can be studied in experiments"
n.
a mode of action; "if you persist in that course you will surely fail"; "once a nation is embarked on a course of action it becomes extremely difficult for any retraction to take place"
n.
a distinctive but intangible quality surrounding a person or thing; "an air of mystery"; "the house had a neglected air"; "an atmosphere of defeat pervaded the candidate's headquarters"; "the place had an aura of romance"
n.
the complex of all the attributes--behavioral, temperamental, emotional and mental--that characterize a unique individual; "their different reactions reflected their very different personalities"; "it is his nature to help others"
n.
how something is done or how it happens; "her dignified manner"; "his rapid manner of talking"; "their nomadic mode of existence"; "in the characteristic New York style"; "a lonely way of life"; "in an abrasive fashion"