behavior

especially British, be·hav·iour

[bih-heyv-yer]

noun

1. manner of behaving or acting.

   Synonyms: carriage, bearing, demeanor

2. Psychology, Animal Behavior.

   1. observable activity in a human or animal.

   2. the aggregate of responses to internal and external stimuli.

   3. a stereotyped, species-specific activity, as a courtship dance or startle reflex.

3. Often behaviors. a behavior pattern.

4. the action or reaction of any material under given circumstances.

   the behavior of tin under heat.

behavior

1. The actions displayed by an organism in response to its environment.

2. One of these actions. Certain animal behaviors (such as nest building) result from instinct, while others (such as hunting) must be learned.

3. The manner in which a physical system, such as a gas, subatomic particle, or ecosystem, acts or functions, especially under specified conditions.

Other Word Forms

• behavioral adjective
• interbehavior noun

Word History and Origins

Origin of behavior¹

First recorded in 1375–1425; behave ( def. ) + -ior (on model of havior, variant of havor, from Middle French (h)avoir “a having,” ultimately from Latin habēre “to have”); replacing late Middle English behavoure, behaver; -or ¹ ( def. )

Idioms and Phrases

see on one's best behavior.

Synonym Study

Behavior, conduct, deportment, comportment refer to one's actions before or toward others, especially on a particular occasion. Behavior refers to actions usually measured by commonly accepted standards: His behavior at the party was childish. Conduct refers to actions viewed collectively, especially as measured by an ideal standard: Conduct is judged according to principles of ethics. Deportment is behavior related to a code or to an arbitrary standard: Deportment is guided by rules of etiquette. The teacher gave Susan a mark of B in deportment. Comportment is behavior as viewed from the standpoint of one's management of one's own actions: His comportment was marked by a quiet assurance.

Example Sentences

“Greater uncertainty likely led to increased precautionary behavior by households and businesses, dampening consumption and investment,” it said.

Read more on The Wall Street Journal

The video was part of a Department of Transportation “civility campaign” that aims to tamp down on in-flight fighting and other “unruly passenger behavior.”

Read more on Los Angeles Times

In fact the vast majority of new cases involve children without the intellectual disabilities often associated with stereotypical autistic behavior, such as sensitivities to touch and an absence of verbal skills.

Read more on Los Angeles Times

These spontaneous discharges hint at behaviors that may occur naturally in the atmosphere.

Read more on Science Daily

This setup allowed the team to measure how much extra effort it took to cross sargassum while observing the turtles without disturbing their behavior.

Read more on Science Daily

Related Words

• act 
• action 
• attitude 
• conduct 
• demeanor 
• management 
• nature 
• performance 
• practice 
• presence 
• role 
• style