Antonyms of adj opisthognathous

1 sense of opisthognathous

Sense 1
opisthognathous (vs. prognathous) -- (having receding jaws)

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

Similarity of adj opisthognathous

1 sense of opisthognathous

Sense 1
opisthognathous (vs. prognathous) -- (having receding jaws)
       => chinless -- (having a receding chin)