Simple Definition of whammy
: something (such as a magical spell) that causes someone to have bad luck
Examples of whammy
<if you tell anyone about this, I swear I'll put the whammy on you>
<put the whammy on herself by publicly predicting that she would win the tennis tournament>
Origin of whammy
probably from 1wham
First Known Use: 1940
Learn More about whammy
Thesaurus: All synonyms and antonyms for "whammy"
Seen and Heard
What made you want to look up whammy? Please tell us where you read or heard it (including the quote, if possible).