slabber
Slabber (verb) means (informal) To dribble saliva or another liquid from the mouth carelessly.
Etymology
This word came from Middle English slaberen, from Middle Dutch slabberen (“to lap, sup, slaver, slabber”), from Old Dutch *slabron, from Proto-West Germanic *slabrōn, from Proto-Germanic *slabrōną (“to scrawl, make a mess”), ultimately imitative in origin. It is cognate with Low German slabbern (“to slabber”), German schlabbern (“to slabber”) and Icelandic slafra (“to slaver”). See also slaver.