A person or thing that discourages someone; something that makes someone lose hope or enthusiasm.
From 'discourage' plus the agent noun suffix '-er,' meaning a person or thing that performs the action of discouraging.
Teachers and coaches often worry about being 'discouragers' without realizing it—research shows that a single sarcastic comment or eye-roll can become a student's internal voice saying 'you can't do this,' lasting years after the moment.
Complete word intelligence in one call. Free tier — 50 lookups/day.