to slap repeatedly or thoroughly, or to cover something by slapping.
From be- (prefix) + slap (imitative word, possibly from Old Norse). The prefix creates an intensive form suggesting multiple or vigorous slaps.
Slap is onomatopoeia—it mimics the sound it makes! This is why slap, slop, splash, and slush all have that 'sl' sound and relate to wetness or impact—the sound itself helps you remember the meaning.
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