w 4 a 1 c 3 k 5 o 1
5 letters · 14 points in Scrabble
Meaning
noun a person who is regarded as eccentric or mad
originEtymology tree English whack Proto-Indo-European *-kos Proto-Germanic *-gaz Proto-West Germanic *-g Old English -iġ Middle English -y English -y English wack(y) English -o English wacko From wack(y) + -o.
Etymology from Wiktionary, CC BY-SA 3.0