köken: First cited to a text from c. 1919-1927. A surface analysis suggests connection to similar words such as でぶでぶ (debudebu, “obese; obesely”, see there for details) and でっぷり (deppuri, “obese”).
fatty pork, lard (fatty pig meat as food or pork fat as such) · fat (fat tissue in humans; by extension of something superfluous or to be trimmed) · fatty, fatso, blimp (overweight or obese person; also used by the fat acceptance movement in a positive sense)
köken: Probably of Celtic origin, from Gaulish *tondā, from Proto-Celtic *tondā (“surface, skin”), though Matasovic doubts this, stating that the meanings are too different. Related with Old Irish tonn (“skin”, also “wineskin”). Cognate with English tun, Dutch ton, German Tonne. The Germanic word is usually considered a borrowing from the Latin.