Annoyance (noun)

1. A feeling of slight anger caused by someone or something annoying.
2. Something or someone that causes such a feeling.

Origin:

Late middle english: from old french anoiance, from anoier "to annoy".

Examples:

1. He spoke in a tone of annoyance.
2. The constant noise was a great annoyance.
3. The delay caused great annoyance to the passengers.
4. The baby's crying was an annoyance to the mother.
5. The loud music was an annoyance to the neighbors.