unwrinkle

1. (transitive) To remove wrinkles from.Examples: "He and she sat side by side like two wax people while the waiter stretched across to unwrinkle the tablecloth and straighten the knives."; "The job was done before Silver could unwrinkle the grimace on his face."Synonyms: flatten out, smoothtransitive

2. (intransitive) To stop being wrinkly; to become flat or smooth.Examples: "His head protruded out of his torn collar much as the head of the tortoise protrudes from its shell, the throat unwrinkling, the eyes like beads, or pips of jet."; "In a rain barrel, water unwrinkles to glass; a lime tree’s daughter there studies her face."; "Emma went through the closet and removed the black gabardine jacket she had hung up to unwrinkle."intransitive