unwinnable

/ʌnˈwɪnəbəl/
adjective
  1. Impossible to win or succeed in.
    • The general knew the battle was unwinnable and ordered a retreat.
    • The chess position was unwinnable for the player with only a king left.
    • Some arguments are unwinnable, so it's better to agree to disagree.
What does "unwinnable" mean? | whatsthatwordmean | whatsthatwordmean