Definitions

1. noun

something that is difficult to understand or solve

“The math problem proved to be a stumper for the students.”

2. noun

a person who stumps

“The politician was a stumper on the debate stage.”

3. verb

to stump or defeat (someone) in a contest or competition

“The team stumped their opponents in the championship game.”

4. verb

to stump or perplex (someone) with something

“The riddle stumped the contestants, leaving them confused.”