a thorn in something's side
a thorn in (someone's/something's) side
someone or something that continually causes problems.
Most teachers usually have one student in their class who is a thorn in their side.

The town finds the casino a thorn in its side, even though it brings huge numbers of tourists to the town.

Health inspectors are a thorn in the side of most restaurant owners.

[TahlilGaran] English Idioms Dictionary ▲

a thorn in side
a constant bother or annoyance to someone
The reporter is a thorn in the politician's side.

The teacher is a thorn in the principal's side and is always complaining about something.

[TahlilGaran] English Idioms Dictionary ▲

a thorn in someone's side
a thorn in (someone's/something's) side
someone or something that continually causes problems.
Most teachers usually have one student in their class who is a thorn in their side.

The town finds the casino a thorn in its side, even though it brings huge numbers of tourists to the town.

Health inspectors are a thorn in the side of most restaurant owners.

[TahlilGaran] English Idioms Dictionary ▲

a thorn in someone's side
a constant bother or annoyance to someone
The reporter is a thorn in the politician's side.

The teacher is a thorn in the principal's side and is always complaining about something.

[TahlilGaran] English Idioms Dictionary ▲

thorn in one's side
{n. phr.} Something that causes stubborn trouble; a constant bother; a vexation.
The new voter organization soon became the biggest thorn in the senator's side.

The guerrilla band was a thorn in the flesh of the invaders.

[TahlilGaran] English Idioms Dictionary ▲