conjecture - definition and synonyms

noun 

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/kənˈdʒektʃə(r)/
singularconjecture
pluralconjectures
  1. [uncountable] the development of a theory or guess based on information that is not complete
    pure conjecture (=a guess):

    The cause of the crash is pure conjecture at this point.

    1. a.
      [countable] a theory or guess based on information that is not complete

      If his conjecture was correct, the mixture should explode in a few moments.

derived word

conjectural

adjective