The term 'TALKS LIKE DAFFY DUCK' can be summarized by the crossword solution 'LISPS', which is a five-letter word. LISPS is an informal term for a speech disorder in which a person speaks with a distorted or exaggerated production of certain sounds, usually sibilants. This type of speech pattern is often associated with the cartoon character Daffy Duck, who is known for his exaggerated lisp.