Pesky (adjective)

Annoying or troublesome in a persistent or petty way.

Origin:

Derived from the middle english word "pesk", meaning to annoy or pester.

Examples:

1. The pesky fly kept buzzing around my head all day.
2. The pesky neighbor's dog barks loudly every morning.
3. He found the paperwork to be a pesky annoyance.
4. The pesky thoughts would not leave his mind.
5. The pesky kids kept asking the same question over and over.