Is “Whacko” a Scrabble word?
Yes
WHACKO
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 Whacko
noun
1.An amusingly eccentric or irrational person.
Synonyms: kook, odd duck, weirdo
adjective
1.Amusingly eccentric or irrational.
Synonyms: kooky, oddballish, pixilated