tubbier

/T AH1 B IY0 ER0/
adjective
  1. 1

    Stout, rotund

  2. 2

    Resembling a tub; sounding dull and without resonance or freedom of sound.

    โ€œa tubby violinโ€

Source: https://en.wiktionary.org/wiki/tubbier, https://en.wiktionary.org/wiki/tubby