The term 'straight man of comedy' refers to a comedic duo in which one person plays the role of the 'straight man, ' who is usually the more serious and sensible of the two. The straight man's job is to set up the jokes for the other person, often referred to as the 'funny man, ' to deliver. An example of this type of duo is Bud ABBOTT and Lou Costello, with ABBOTT playing the straight man role. ABBOTT's 6-letter solution in the crossword is ABBOTT.