Antonyms of adj three-petalled

1 sense of three-petalled

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

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

Similarity of adj three-petalled

1 sense of three-petalled

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