(v)squat, crouch, scrunch, scrunch up, hunker, hunker downsit on one's heels“In some cultures, the women give birth while squatting”, “The children hunkered down to protect themselves from the sandstorm”
(v)wrinkle, ruckle, crease, crinkle, scrunch, scrunch up, crispmake wrinkles or creases on a smooth surface; make a pressed, folded or wrinkled line in; ‘crisp’ is archaic“The dress got wrinkled”, “crease the paper like this to make a crane”