keeker
/ˈkiːkər/Definitions
1. noun
A person who laughs or snickers, especially in a mocking or derisive manner.
“The classroom erupted into chaos, with one keeker giggling uncontrollably in the back row.”
2. verb
To laugh or snicker, especially in a mocking or derisive manner.
“The audience keeker-ed at the comedian’s silly joke.”