whammy

Plural: whammies

Noun

• A hex, spell, or curse bringing bad luck; a potent blow.
• a serious or devastating setback
• an evil spell
  • "he put the whammy on me"
• a serious or devastating setback
• an evil spell; a curse or hex
• The vibrato system of an electric guitar, or just its lever (whammy bar)

Examples

• After a triple-word, triple-letter score, his opponent felt hit by a WHAMMY of points.

Synonyms

curse, hex, jinx