Antonyms of adj square-jawed

1 sense of square-jawed

Sense 1
square-jawed -- (having a relatively square jaw)

INDIRECT (VIA jawed) -> jawless -- (of animals having no jaw)

Similarity of adj square-jawed

1 sense of square-jawed

Sense 1
square-jawed -- (having a relatively square jaw)
       => jawed (vs. jawless) -- (of animals having jaws of a specified type)