behaviour

The noun has 4 meanings:

Meaning #1: the action or reaction of something (as a machine or substance) under specified circumstances
  Synonym: behavior

Meaning #2: (behavioral attributes) the way a person behaves toward other people
  Synonyms: demeanor, demeanour, behavior, conduct, deportment

Meaning #3: (psychology) the aggregate of the responses or reactions or movements made by an organism in any situation
  Synonym: behavior

Meaning #4: manner of acting or conducting yourself
  Synonyms: behavior, conduct, doings

Common misspelling(s) of behaviour

• behavour