Definitions

1. adjective

resembling or suggestive of a petticoat, especially in being flimsy, loose-fitting, or excessively ornate

“The designer’s petticoaty dresses were criticized for their lack of practicality.”

2. noun

a quality or aspect of something that is petticoat-like

“The petticoaty frill on her skirt added a touch of whimsy to the outfit.”