Petallike is a term used to describe objects or structures resembling a petal or petals, such as flower petals. There are several synonyms that can be used in place of petallike, such as petaloid, petal-shaped, petaline, and corolla-shaped. Petaloid is an adjective often used to describe plant structures that resemble petals but are not true petals, such as sepals that are modified to look like petals. Petal-shaped and petaline are also commonly used to describe petal-like structures, whereas corolla-shaped is often used to describe structures resembling the corolla of a flower.
Overall, there are numerous synonyms for petallike that can be used depending on the specific context of the description.