v.
   - allow the existence or occurrence of (something that one dislikes or disagrees with) without interference.
 - endure (someone or something unpleasant) with forbearance.
 - be capable of continued exposure to (a drug, toxin, etc.) without adverse reaction.
 
 
  Derivative
  
    - toleration n.
  - tolerator n.
 
   
  Etymology
  C16 (earlier (C15) as toleration, denoting the granting of permission by authority): from L. tolerat-, tolerare ‘endure’.