from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Chiefly British Variant of behavior.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The way a living creature behaves or acts.
  • n. The way a device or system operates.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the action or reaction of something (as a machine or substance) under specified circumstances
  • n. (behavioral attributes) the way a person behaves toward other people
  • n. (psychology) the aggregate of the responses or reactions or movements made by an organism in any situation
  • n. manner of acting or controlling yourself


From behave +‎ -iour, apparently in simulation of haviour, havior, havour. Compare Scots havings ("behaviour"), from have ("to behave"). (Wiktionary)



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