でぶでぶ

Etymology
Attested during the. Derived from with reduplication of the  element, in a similar pattern seen in other term pairs such as  →,  → ,  → , etc.

itself likely derives from, from verb , a compound of prefixed verb , used in a similar way to the English preposition after a verb) and verb.

Adverb

 * 1) extremely fatly, obesely

Usage notes
When used without a particle in a way that immediately modifies a verb, this is parsed grammatically as an adverb. However, in translation, it might correlate better with an adjective in English.

Adjective

 * 1) extremely fat, obese