Tubby (adjective)

1. Short and plump; rotund.
2. Having a round and chubby appearance.

Origin:

From middle english tubbe, from old english tubbe ("tub, vessel"), from proto-germanic *tubjǭ ("tub"), from proto-indo-european *dʰewb- ("to swell, be full").

Examples:

1. The tubby little man waddled down the street.
2. She became more tubby as she got older.
3. The tubby baby laughed and kicked its chubby legs.
4. He was feeling a bit tubby after a month of eating too much.
5. The tubby cat sat on the windowsill, grooming itself.