Antonyms of adj acanthous

1 sense of acanthous

Sense 1
acanthoid, acanthous, spinous -- (shaped like a spine or thorn)

INDIRECT (VIA pointed) -> pointless, unpointed -- (not having a point especially a sharp point; "my pencils are all pointless")

Similarity of adj acanthous

1 sense of acanthous

Sense 1
acanthoid, acanthous, spinous -- (shaped like a spine or thorn)
       => pointed (vs. pointless) -- (having a point)