Comparative form of chunky: more chunky(adjective)
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Use "chunkier" in a sentence
"It wasn't that I was weary of our slow bounce back from recession (if in fact we really are) or afraid of the high unemployment rate still plaguing our country or, on the fashion front, all those Belgian designer-inspired longer hemlines and chunkier shoes I saw coming down the runways for spring."
"It was just a bit chunkier in the mouth, but classy nonetheless."
"There seems to be a rule that the chunkier the thighs, the shorter the skirt."