Agent 86 is a fictional character from the television series 'Get SMART'. He is a secret agent who works for the SPY agency CONTROL, and is known for his intelligence, wit, and resourcefulness. His job description includes being a SPY, being SMART, and thwarting the plans of the evil organization KAOS. The crossword solutions for Agent 86 are SPY (3 letters), SMART (5 letters), NIX (3 letters), and RADON (5 letters). SPY stands for a person who secretly collects information for a government or other organization, SMART stands for having or showing quick intelligence or mental agility, NIX stands for to reject or cancel something, and RADON stands for a radioactive element.