stumper

noun4

1. •
   (informal) A difficult puzzle or problem.

   • Global warming is a real stumper.
2. •
   (informal) A wicketkeeper.

   • He's not yet well known, but he's a good stumper.
3. •
   One who stumps, or speaks, or orates, as a politician.
4. •
   (slang, no longer used) A boastful person