wrinkle

/ˈrɪŋkəl/
verb
  1. To form small lines or folds on the surface of something, such as skin, fabric, or paper.
    • The heat caused the plastic to wrinkle and warp.
    • If you sit on your coat, it will wrinkle.
    • She wrinkled her nose at the bad smell.
  2. To cause something to have small folds or creases.
    • He wrinkled the map trying to fold it back into the glove compartment.
    • The dry cleaner's machine wrinkled my favorite dress.
    • Be careful not to wrinkle the pages of the book.
Antonyms
noun
  1. A small line or fold in the skin, especially on the face, caused by age, sun, or expression.
    • His grandfather had deep wrinkles on his forehead from a lifetime of hard work.
    • Sunscreen can help prevent wrinkles from forming on your skin.
    • She noticed a new wrinkle around her eyes after years of smiling.
  2. An unwanted fold or crease in fabric, paper, or other material.
    • She smoothed the wrinkle on the tablecloth before setting the plates.
    • I need to iron this shirt to get the wrinkles out.
    • The poster had a wrinkle in the corner from being rolled up.
  3. A minor problem, difficulty, or unexpected detail in a plan or situation.
    • There's a wrinkle in our travel plans because the flight got canceled.
    • The new software has a few wrinkles that the developers need to fix.
    • We thought the deal was done, but a legal wrinkle came up at the last minute.