Word.ws English Dictionary

impossiblest

impossiblest is the superlative form of impossible.

Meaning of impossible

Adjective

impossible (not generally comparable, comparative more impossible, superlative most impossible)

  1. (not comparable, usually) Not possible; not able to be done or happen.
    • Antonio: What impossible matter will he make easy next?
      Sebastian: I think he will carry this island home in his pocket and give it his son for an apple.
      Antonio : And sowing the kernels of it in the sea bring forth more islands.1610–1611 (date written), William Shakespeare, “The Tempest”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published...
  2. (colloquial, not comparable, usually) Very difficult to deal with.
    • You never listen to a word I say – you're impossible!
  3. (dated, not comparable, usually) imaginary
    • impossible quantities, or imaginary numbers

See all 5 meanings of impossible

Questions about impossiblest

What is impossiblest the superlative form of?
Impossiblest is the superlative form of impossible.

Words near impossiblest in the dictionary

  1. impossible trident
  2. impossible tridents
  3. impossible trinity
  4. impossibleness
  5. impossibles
  6. impossiblest
  7. impossibly
  8. impost
  9. imposter
  10. imposterhood
  11. imposterous

Source and license

Adapted from Wiktionary: impossiblest (page history and authors); impossible (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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