Complainer

Pronunciation: /kəmˈpleɪnər/

Complainer (noun)

  1. A person who often complains about small things, usually in an annoying way.
  2. A person who says they are unhappy about something and asks for change.

Examples

  • The complainer grumbles about everything, even small changes.
  • A complainer can make meetings feel tiring and slow.