pester

/ˈpɛstə(ɹ)/

pester means A bother or nuisance.

pester is pronounced /ˈpɛstə(ɹ)/.

Etymology

In the senses of “overcrowd (a place)” and “impede (a person)”: from Middle French and Old French empestrer (“encumber”), influenced by English pest. The modern sense is an extension of the sense “infest”. Comparable to English construction pest + -er (used to form frequentative verbs).

noun

A bother or nuisance.e.g.“By now I presumed I had become a real pester.” — 2017, Samuel J. Archer, Will There Be Another Lincoln, Nixon, Johnson or Kennedy?, page 15:

verb

To bother, harass, or annoy persistently.e.g.“He pestered me with questions.”
To crowd together thickly.

Definitions & examples from Wiktionary (CC BY-SA 3.0).