ugly customer

An ill-natured or vicious individual, as in Watch out for Charlie when he's drinking; he can be an ugly customer. This phrase uses ugly in the sense of "mean" or "dangerous." [c. 1800]

Common Names:

Name	Pronounced	Usage
Ballard	['bæləd]
Rosalina	ro-sah-LEE-nah (Spanish)	Portuguese, Spanish
Jessika	YE-si-kah (German), JES-i-kə (English)	German, English (Modern)
Nikolaos	-	Ancient Greek, Greek
JÜRgen	YUYR-gen	Low German
Eula	YOO-lə	English