adjective
dumpy
DUM-pee/ˈdʌmpi/
Unattractively short and stout.
The pitcher has a dumpy shape beside the slender vessel.

Etymology
Dumpy apparently comes from a noun sense of dump, though the connection is unclear. If that sense was “lump,” as also suggested for dumpling, the image would fit a compact, squat figure.
In context
there was Santa herself fat and dumpy in one of her Preposterous red and purple dresses
More examples
- She rejected the costume because it made her feel dumpy.
- The cartoon gave the character a deliberately dumpy silhouette.
- He regretted calling the short, stout figure dumpy.
Forms
dumpy · dumpier · dumpiest