Antonyms of adj sharp-cornered

1 sense of sharp-cornered

Sense 1
sharp-cornered, sharp-angled -- (having sharp corners)

INDIRECT (VIA angular) -> rounded -- (curving and somewhat round in shape rather than jagged; "low rounded hills"; "rounded shoulders")

Similarity of adj sharp-cornered

1 sense of sharp-cornered

Sense 1
sharp-cornered, sharp-angled -- (having sharp corners)
       => angular (vs. rounded), angulate -- (having angles or an angular shape)