behavior

Definitions

1. Human conduct relative to social norms.
   US, uncountable, usually
2. The way or manner a living creature behaves or acts generally.
   US, countable, uncountable, usually
3. A state of probation about one's conduct.
   US, informal, uncountable, usually
4. An observable response produced by an organism.
   US, countable, uncountable, usually
5. The way a device or system operates.
   US, uncountable, usually

Equivalents

Examples

“Teachers will probably be on their best behaviour for your visit⟳ – but don't be upset⟳ if they don't even notice⟳ you; they've got enough going on.”

“He was on his best behavior when her family visited.”

CEFR level