Here's just a partial selection from the English language:
Adispose-tissue challenged
Big, Bloated, Blobby
Corpulent
Cow-shaped
Elephantine, elephant-sized
Fatty, Fleshy
Gigantic
Huge
Kingsize
Lardy, lardass, large
Massive
Obese, Oversize, Overweight
Porcine, Porky, Portly
Rotund, Round
Stout, Supersize, Swollen
Tubby
Waddling, Weighty, Whale
A sample from other languages:
Dutch: Zwaarlijvig
French: Gros, Grosse (feminine)
German: Dick
Italian: Obeso, grassociio, sovrapesso, smisuratamente grasso,
Spanish: Gordo, Obeso (gorda, obesa in the feminine)
Swedish: Tjock
Of course, we should be fair and include some names for the undersized (too thin):
Anorexic
Pin-sized
Skinny, stick-thin
Spaghetti-shaped
Twiggy
Adispose-tissue challenged
Big, Bloated, Blobby
Corpulent
Cow-shaped
Elephantine, elephant-sized
Fatty, Fleshy
Gigantic
Huge
Kingsize
Lardy, lardass, large
Massive
Obese, Oversize, Overweight
Porcine, Porky, Portly
Rotund, Round
Stout, Supersize, Swollen
Tubby
Waddling, Weighty, Whale
A sample from other languages:
Dutch: Zwaarlijvig
French: Gros, Grosse (feminine)
German: Dick
Italian: Obeso, grassociio, sovrapesso, smisuratamente grasso,
Spanish: Gordo, Obeso (gorda, obesa in the feminine)
Swedish: Tjock
Of course, we should be fair and include some names for the undersized (too thin):
Anorexic
Pin-sized
Skinny, stick-thin
Spaghetti-shaped
Twiggy