5 letters · 11 points in Scrabble
noun an informal term for a father; probably derived from baby talk
originEtymology tree English dad Proto-Indo-European *-kos Proto-Germanic *-gaz Proto-West Germanic *-g Old English -iġ Middle English -y English -y English daddy From dad + -y (adjectival suffix).
Etymology from Wiktionary, CC BY-SA 3.0