Antonyms of adj pyramidical

1 sense of pyramidical

Sense 1
pyramidal, pyramidic, pyramidical -- (resembling a pyramid)

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

Similarity of adj pyramidical

1 sense of pyramidical

Sense 1
pyramidal, pyramidic, pyramidical -- (resembling a pyramid)
       => pointed (vs. pointless) -- (having a point)