From Middle Dutch slurpen, slorpen (“to sip, slurp”), from Old Dutch *slurpan, from Proto-West Germanic *slurp- (“to sip, slurp”), perhaps from Proto-Indo-European *srebʰ-, *srobʰ- (“to sip, slurp, gulp”). Cognate with West Frisian sloarpe, sloarpje, slurvje (“to slurp”), German schlürfen (“to sip, slurp”), Swedish slurpa (“to slurp”), Norwegian slurpe (“to slurp”). Compare also Saterland Frisian slubberje (“to slurp”), German Low German slubbern (“to slurp”), Middle High German sluppern (“to slurp”), Swedish, Norwegian, and Icelandic slupra (“to slurp”), Middle High German sürfeln, sürpfeln (“to sip, slurp”), Latin sorbeō (“to suck up, imbibe, absorb”). Often treated as onomatopoeic in modern writing.