v.
 come to or bring to a resolution in the mind as a result of consideration. 
▸give a judgement concerning a matter or legal case.
 ▸resolve or settle (an issue or contest).
 
  Derivative
  
    - decidable adj.
  - deciding adj.
 
   
  Etymology
  ME: from Fr. décider, from L. decidere ‘determine’, from de- ‘off’ + caedere ‘cut’.