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
Oidipous	-	Greek Mythology
Sharron	SHER-ən, SHAR-ən	English
Adalberto	ah-dahl-BER-to (Italian, Spanish), ə-dəl-BER-too (Portuguese)	Italian, Spanish, Portuguese
Asch	[æʃ]
Zoroaster	ZAWR-ə-as-tər (English)	History
Connie	['kɔni]