Antonyms of adj four-petalled

1 sense of four-petalled

Sense 1
four-petaled, four-petalled -- ((of flowers) having four petals)

INDIRECT (VIA petalous) -> apetalous, petalless -- ((of flowers) having no petals)

Similarity of adj four-petalled

1 sense of four-petalled

Sense 1
four-petaled, four-petalled -- ((of flowers) having four petals)
       => petalous (vs. apetalous), petaled, petalled -- ((of flowers) having petals)