First name of the character played by Jim Carrey in the 1994 film Dumb and Dumber (5)
I believe the answer is:
lloyd
(Other definitions for lloyd that I've seen before include "Christopher - - , garden expert" , "Frank -- Wright, US architect" , "Harold --; -- George" , "Harold - - , silent comic" , "David - George, British PM nineteen sixteen to nineteen twenty two" .)