| Answer | Crossword Clue |
|---|---|
| WIN | When repeated, advantageous to both sides |
| WINWIN | Advantageous to both sides |
| thaumatrope | an optical toy in which pictures on both sides of a card are seen to combine when the card is rotated rapidly |
| thaumatropes | THAUMATROPE, an optical toy in which pictures on both sides of a card are seen to combine when the card is rotated rapidly |
| thaumatropical | of or like a thaumatrope, an optical toy in which pictures on both sides of a card are seen to combine when the card is rotated rapidly |
