The term 'thirtysomething actor' refers to an actor who is in their thirties. The crossword solutions for this term are Kenolin (7 letters) and Olin (4 letters). Kenolin is likely a reference to Ken Olin, an American actor, director, and producer who is best known for his roles in the television series Thirtysomething and Brothers & Sisters. Olin is likely a reference to Josh Olin, an American actor who is best known for his role as the character Chris Keller on the television series Thirtysomething.