In early use often hardly more emphatic than the mod. dirty; it is now a violent expression of disgust, seldom employed in polite colloquial speech. [OED]
Related: Filthily; filthiness.
"professional jester; a minstrel," c. 1500, from Latin ioculator "a joker, jester," from iocus "pastime; a joke" (see joke (n.)).
"spittle, the secretions of the salivary glands of the mouth," early 15c. (Chauliac), salive, from Old French salive and directly from Latin saliva "spittle" (from Proto-Italic *sal-iwo- "dirty yellow," from PIE root *sal- (2) "dirty; gray; "see sallow (adj.)). Related: Salival.