If you're looking to spice up your gainer fics or encouragement posts, here are some new words for you to try! These are a mix of descriptors for bodies as well as actions:
Abdominous: having a large belly; fat
Ample: enough or more than enough; plentiful
Broad in the Beam: having broad hips or a large ass (I just liked this phrase tbh)
Bulbous: fat, round, or bulging
Burly: large and strong; heavily built
Buxom: (women) plump, especially with large breasts
Delectation: pleasure and delight
Distended: swollen due to pressure from inside; bloated
Engorge: to cause to swell with fluid; to eat to excess
Idle: avoiding work; lazy
Imbibe: to drink, esp. alcohol
Indolent: wanting to avoid activity or exertion; lazy
Inert: lacking the ability or strength to move
Laborious: requiring considerable effort or time
Languid: showing a dislike for physical exertion or effort; slow and relaxed
Leaden: dull, heavy, or slow (ex, "leaden feet")
Lumbering: moving in a slow, heavy, awkward way
Palatial: resembling a palace; being splendid and spacious
Pendulous: hanging down loosely
Ponderous: slow and clumsy due to great weight
Protuberant: protruding; bulging
Rapacious: aggressively greedy or grasping
Rubenesque: (women) voluptuous, reminiscent of the paintings of Peter Paul Rubens
Rubicund: having a red/ruddy complexion to the face
Sumptuous: splendid and expensive-looking
Torpor: a state of physical or mental inactivity; lethargy
Feel free to reblog and add more suggestions :)