Where does “デブる” come from?

デブる (Japanese) comes from Japanese る, from Japanese いる, from Old Japanese いる.

デブる (Japanese): To become chubby or overweight

Definitions

  1. To become chubby or overweight

Ancestry of “デブる”, step by step

デブる traces back through two separate lines of ancestry.

via Japanese

StepLanguageWordMeaning
1JapaneseA general method to form verbs (as a godan katsuyō verb). Much less productive than する
2Japaneseいるto exist, to be
3Old Japaneseいる

via Japanese デブ

StepLanguageWordMeaning
1Japaneseデブfat, chubby; fatty; fatso
Every word from Old Japanese いるEvery word from Japanese いるEvery word from Japanese