not bat an eye

also not bat an eyelid

to not show any reaction Mom didn't bat an eye when I told her I was getting married.

Usage notes: also used in the form without batting an eye with the same meaning: She can give a formal dinner for thirty without batting an eye.

/eyelash Informal

To show no emotion; appear unaffected: The reporter didn't bat an eyelash while reading the gruesome news.

Name	Pronounced	Usage
Uduak	-	Western African, Ibibio
Willoughby	WIL-ə-bee	English (Rare)
RiŠKo	-	Slovak
Sonja	ZAWN-yah (German), SON-yah (Finnish)	German, Dutch, Swedish, Norwegian, Danish, Icelandic, Finnish, Slovene, Serbian, Croatian, Macedonia
Tenskwatawa	-	Native American, Shawnee
Mahfuz	-	Arabic