go from one extreme to the other

to change from one thing to its opposite. You go from one extreme to another about Tom—one day angry, the next day perfectly happy.

Name	Pronounced	Usage
Lionel	lee-o-NEL (French), LIE-nəl (English)	French, English
Swanhilda	-	German
Rowell	['rauəl]
Manoja	-	Hinduism
Young	yung	Korean
Oberon	O-bər-ahn (English)	Literature