Antonyms of adj prognathous

1 sense of prognathous

Sense 1
prognathous (vs. opisthognathous), prognathic, hypognathous -- (having a projecting lower jaw)

opisthognathous (vs. prognathous) -- (having receding jaws)
        => chinless -- (having a receding chin)

Similarity of adj prognathous

1 sense of prognathous

Sense 1
prognathous (vs. opisthognathous), prognathic, hypognathous -- (having a projecting lower jaw)
       => lantern-jawed -- (having a protruding jaw giving the face a gaunt appearance)