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behave

[bih-heyv] /bɪˈheɪv/
verb (used without object), behaved, behaving.
1.
to act in a particular way; conduct or comport oneself or itself:
The ship behaves well.
2.
to act properly:
Did the child behave?
3.
to act or react under given circumstances:
This plastic behaves strangely under extreme heat or cold.
verb (used with object), behaved, behaving.
4.
to conduct or comport (oneself) in a proper manner:
Sit quietly and behave yourself.
Origin
late Middle English
1400-1450
1400-50; late Middle English behaven (reflexive). See be-, have
Related forms
unbehaving, adjective
well-behaved, adjective
Synonyms
1. perform, acquit oneself, deport oneself.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for un behaving

behave

/bɪˈheɪv/
verb
1.
(intransitive) to act or function in a specified or usual way
2.
to conduct (oneself) in a specified way he behaved badly towards her
3.
to conduct (oneself) properly or as desired the child behaved himself all day
Word Origin
C15: see be-, have
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for un behaving

behave

v.

early 15c., from be- intensive prefix + have in sense of "to have or bear (oneself) in a particular way, comport" (cf. German sich behaben, French se porter). Cognate Old English compound behabban meant "to contain," and alternatively the modern sense of behave might have evolved from behabban via a notion of "self-restraint." Related: Behaved; behaving.

Online Etymology Dictionary, © 2010 Douglas Harper
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