Have a funny feeling is an expression used to describe a feeling of unease or apprehension. The term can be broken down into two words, 'HAVE' and 'funny feeling'. The crossword solution for the word 'HAVE' is SENSE, which is a five letter word. SENSE is defined as the ability to perceive, understand, and interpret things through the use of the senses. Therefore, when someone has a funny feeling, they are using their SENSE to detect something that is not quite right.