be a thorn in flesh

be a thorn in somebody's flesh/side

someone or something that keeps annoying you or causing you trouble A relentless campaigner, he was a thorn in the government's side for years.

Name	Pronounced	Usage
Altti	AHLT-tee	Finnish
Tikva	-	Hebrew
NapolÉOn	-	French (Rare)
Ingolf	ING-gawlf (German)	Swedish, Norwegian, Danish, German
Wade	[weid]
RÉGulo	RE-goo-lo (Spanish)	Spanish, Portuguese