thorn in one's side

Definitions

A persistent source of annoyance, irritation, or trouble.

A person or thing that consistently causes difficulty or prevents someone from being at ease.

Examples

The constant noise from the construction site next door has been a real thorn in my side all week.

His refusal to follow company policy became a thorn in the manager's side, eventually leading to his dismissal.

Synonyms

a constant nuisance a major headache a source of irritation a persistent annoyance a pain in the neck

Antonyms

a source of joy a welcome presence a great comfort a breath of fresh air a delightful companion