adjective.filled or covered with feces; also: contaminated with feces

• poopy diaper
• Raising children forces adults into a life marked by spit-up stains, poopy diapers, homework assignments, …, hugs and kisses, circles under the eyes and, for those of us who work, bucketloads of guilt.

adjective.not good or pleasant: crappy

• A Ph.D. in microbiology is not necessary to grasp the concept: Clean water is good. Poopy water is bad.
• … the Upper East Side holds not only some of the poshest homes, but also the poopiest sidewalks. Findings … show a “concerning” level of turd-related pathogens …