consequent vs doubtful

consequent

adj
  • Of or pertaining to consequences. 

  • Following as a result, inference, or natural effect. 

  • Of a stream, having a course determined by the slope it formed on. 

noun
  • An event which follows another. 

  • The second term of a ratio, i.e. the term b in the ratio a:b, the other being the antecedent. 

  • A consequent stream. 

  • The second half of a hypothetical proposition; Q, if the form of the proposition is "If P, then Q." 

doubtful

adj
  • Subject to, or causing doubt. 

  • Experiencing or showing doubt, sceptical. 

  • Improbable or unlikely. 

  • Unclear or unreliable. 

  • Suspicious, or of dubious character. 

  • Undecided or of uncertain outcome. 

noun
  • A doubtful person or thing. 

How often have the words consequent and doubtful occurred in a corpus of books? (source: Google Ngram Viewer )