Is “Whammo” a Scrabble word?
Yes
WHAMMO
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Whammo
/ˈwæməʊ/
noun
1.An action-packed scene in a film, etc.
interjection
1.Used to emphasis the suddenness of an event.
“So, I'm driving along when, whammo, a tree falls in front of the car.”
Synonyms: blammo