straight-faced

mod. with a serious, unsmiling face. He was a very straight-faced prof, but he has a tremendous sense of humor.

Name	Pronounced	Usage
Maximilienne	-	French
Oiva	OY-vah	Finnish
Siofra	SHEEF-rə	Irish
Duilius	-	Ancient Roman
Edelmira	-	Spanish
Aristarchus	-	Ancient Greek (Latinized)