1570s (implied in spattering), possibly a frequentative verb from the stem of Dutch or Low German spatten "to spout, burst," of imitative origin. Related: Spattered. As a noun from 1797.
The baby spattered the bib with food
he heard a spatter of gunfire
spastic
spat
spate
spathic
spatial
spatter
spatterdash
spatula
spatulate
spavin
spawn