chunkiest
Thickest and heaviest
Chunkiest is the superlative form of chunky—the most thick, solid, or bulky among a group.
A sweater might be the chunkiest in your closet; a salsa the chunkiest on the shelf.
That's the chunkiest peanut butter I've ever seen.
Largest and heaviest
Largest and heaviest
Most full of clods
bulkiest
Largest and heaviest
blockiest · sturdiest · heaviest · densest · broadest · widest
bulkiest
Largest and heaviest
lumpiest
Most full of clods
heartiest
Superlatively robust or enthusiastic