1. refutable - Adjective
2. refutable - Adjective Satellite
Admitting of being refuted or disproved; capable of being proved false or erroneous.
Source: Webster's dictionaryA theory which is not refutable by any conceivable event is non-scientific. Irrefutability is not a virtue of a theory (as people often think) but a vice. Karl Popper
It is certainly not the least charm of a theory that it is refutable. Friedrich Nietzsche
Because of the two meanings of the word undecidable, the term independent is sometimes used instead of undecidable for the "neither provable nor refutable" sense. Source: Internet
However, suppose that for every formula φ there is some formula ψ taken from a more restricted class of formulas C, such that " is either refutable or satisfiable" → " is either refutable or satisfiable". Source: Internet
If every formula in R of degree k is either refutable or satisfiable, then so is every formula in R of degree k+1. Source: Internet
If on the other hand Theorem 2 holds and φ is valid in all structures, then ¬φ is not satisfiable in any structure and therefore refutable; then ¬¬φ is provable and then so is φ, thus Theorem 1 holds. Source: Internet