Manner of behaving, whether good or bad; mode of conducting one's self; conduct; deportment; carriage; -- used also of inanimate objects; as, the behavior of a ship in a storm; the behavior of the magnetic needle. A gentleman that is very singular in his behavior. Steele. To be upon one's good behavior, To be put upon one's good behavior, to be in a state of trial, in which something important depends on propriety of conduct. -- During good behavior, while (or so long as) one conducts one's self with integrity and fidelity or with propriety.
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