“The behavior of an organism is that portion of the organism’s interaction with its environment that is characterized by detectable displacements in space through time of some part of the organism and that results in a measurable change in at least one aspect of the environment.” Johnston and Pennypacker (1980)

In essence, behavior is movement which requires displacements in space through time

behavior

activeness, activity, action – the state of being active; “his sphere of activity”; “he is out of action”

2. behaviour – (behavioral attributes) the way a person behaves toward other people

demeanor, demeanour, deportment, conduct, behavior

trait – a distinguishing feature of your personal nature

manners – social deportment; “he has the manners of a pig”

citizenship – conduct as a citizen; “award for good citizenship”

swashbuckling – flamboyantly reckless and boastful behavior

correctitude, properness, propriety – correct or appropriate behavior

improperness, impropriety – an improper demeanor

personal manner, manner – a way of acting or behaving

3. behaviour – (psychology) the aggregate of the responses or reactions or movements made by an organism in any situation

behavior

activity – any specific behavior; “they avoided all recreational activity”

territoriality – the behavior of a male animal that defines and defends its territory

psychological science, psychology – the science of mental life

4. behaviourbehaviour – manner of acting or controlling yourself

behavior, conduct, doings

activity – any specific behavior; “they avoided all recreational activity”

aggression – deliberately unfriendly behavior

bohemianism – conduct characteristic of a bohemian

dirty pool – conduct that is unfair or unethical or unsportsmanlike

dirty tricks – underhand commercial or political behavior designed to discredit an opponent

offense, offensive activity, discourtesy, offence – a lack of politeness; a failure to show regard for others; wounding the feelings or others

easiness – the quality of being easy in behavior or style; “there was an easiness between them”; “a natural easiness of manner”

the way of the world, the ways of the world – the manner in which people typically behave or things typically happen; “the ordinary reader is endowed with considerable wisdom and knowledge of the way of the world”; “she was well-versed in the ways of the world before she had taken the veil”; “he was amazingly innocent of the ways of the world”