Antonyms of adj paunchy
1 sense of paunchy
Sense 1
abdominous, paunchy, potbellied -- (having a large belly)
INDIRECT (VIA fat) -> thin, lean -- (lacking excess flesh; "you can't be too rich or too thin"; "Yon Cassius has a lean and hungry look"-Shakespeare)
Similarity of adj paunchy
1 sense of paunchy
Sense 1
abdominous, paunchy, potbellied -- (having a large belly)
=> fat (vs. thin) -- (having an (over)abundance of flesh; "he hadn't remembered how fat she was")