The crossword solution for the term SIM ACTOR is ALASTAIR, an 8 letter word. ALASTAIR Sim was a Scottish actor who was active in the mid-20th century. He is best known for his roles in the 1951 film Scrooge and the 1953 film The Belles of St. Trinian's. He was also a prolific stage actor, appearing in many productions throughout his career. Sim was known for his versatility and range of characters, from comedic to serious roles.