take (someone) for a fool

To presume or believe that someone is very stupid or foolish. I'd advise you not to take her for a fool. She may play dumb, but she's very crafty.

Name	Pronounced	Usage
Yann	-	Breton, French
Yuu	yoo:	Japanese
Rahim	rah-HEE:M	Arabic
Jouko	YO-oo-ko	Finnish
Dee	[di:]
Fungai	-	Southern African, Shona