wrinkle, ruckle, crease, crinkle, scrunch, scrunch up, crisp

make wrinkles or creases into a smooth surface; "The dress got wrinkled"

• pucker, rumple, cockle, crumple, knit — to gather something into small wrinkles or folds
• pucker, ruck, ruck up — become puckered

• fold, fold up, turn up — bend or lay so that one part covers the other