true vs unsure

true

adv
  • Accurately. 

verb
  • To straighten (of something that is supposed to be straight). 

  • To make even, level, symmetrical, or accurate, align; adjust. 

noun
  • The state of being in alignment. 

adj
  • As an ellipsis of "(while) it is true (that)", used to start a sentence 

  • Conforming to a rule or pattern; exact; accurate. 

  • Genuine; legitimate, valid. 

  • Correctly aligned or calibrated, without deviation. 

  • based on actual historical events. 

  • Conforming to the actual state of reality or fact; factually correct. 

  • Used in the designation of group of species, or sometimes a single species, to indicate that it belongs to the clade its common name (which may be more broadly scoped in common speech) is restricted to in technical speech, or to distinguish it from a similar species, the latter of which may be called false. 

  • Fair, unbiased, not loaded. 

  • Of the state in Boolean logic that indicates an affirmative or positive result. 

  • Loyal, faithful. 

  • Accurate; following a path toward the target. 

unsure

adj
  • uncertain 

  • unstable or precarious 

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