Antonyms of adj star-shaped

1 sense of star-shaped

Sense 1
asteroid, star-shaped -- (shaped like a star)

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

Similarity of adj star-shaped

1 sense of star-shaped

Sense 1
asteroid, star-shaped -- (shaped like a star)
       => angular (vs. rounded), angulate -- (having angles or an angular shape)