Pierre changes his behavior when he is reunited with his parents.

VOA: special.2009.10.05

His behavior and appearance grew increasingly strange.

VOA: special.2009.06.27

His behavior and appearance became increasingly strange.

VOA: special.2009.07.05

His behavior during the so-called Chappaquiddick incident he waited hours before reporting his accident to police provided the first of many cracks in the Kennedys' public image.

VOA: standard.2009.08.26

Flicit's opinion of his wife's behavior after two months of marriage did not matter to him.

VOA: special.2009.06.27

Iggy Pop became famous for his wild behavior on stage.

VOA: special.2010.03.19

The president refers to his proposed restriction on risky behavior as the "Volcker Rule."

VOA: standard.2010.01.21