Definition of disappointer in English:

disappointer

noun

  • A person who or thing which fails to fulfil an expectation or brings about the disappointment of an aim, hope, objective, etc.

Origin

Mid 17th century; earliest use found in Robert Baillie (1599–1662), Church of Scotland minister and author. From disappoint + -er.

Pronunciation

disappointer

/ˌdɪsəˈpɔɪntə/