slappy (English) comes from English -y, from Middle English -y, from Old English -iġ, from Proto-West Germanic -g, from Proto-Germanic -gaz, from Proto-Indo-European -ḱos — -y, -ic.
slappy (English): Resembling a slap, especially of sound; A grind...
Definitions
Resembling a slap, especially of sound; A grind...