thorn in (one's) side

A person or thing that is frequently problematic and/or annoying. My new neighbors blast music at all hours of the day and night—they're a real thorn in my side My car has become such a thorn in my side—today is the third day this week that it wouldn't start!

Common Names:

Name	Pronounced	Usage
Llinos	LEEN-aws, LIN-aws	Welsh
Jerrik	-	Danish
Korbin	KAWR-bin	English (Modern)
Nora	NAWR-ə (English), NO-rah (German)	Irish, English, Swedish, Norwegian, Danish, German, Dutch, Italian
ÁSbjÖRn	-	Ancient Scandinavian, Icelandic
XoÁN	-	Galician