/ dɪˈpɔːtmənt; NAmE -ˈpɔːrt-/ noun [ U ] ( formal )
1.
( BrE ) the way in which a person stands and moves :
lessons for young ladies in deportment and etiquette
2.
( old-fashioned , especially NAmE ) the way in which a person behaves
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WORD ORIGIN
early 17th cent. (denoting behaviour in general): from French déportement , from the verb déporter , from Latin deportare , from de- away + portare carry.