despairer
/dɪˈspɛrər/
noun
- A person who has lost all hope or who tends to give up hope easily.
- In the face of failure, a despairer will quit, but a fighter will try again.
- She tried to comfort the despairer, reminding him that every cloud has a silver lining.
- The old man was a despairer, always expecting the worst.
Antonyms