The term 'Speak Like Daffy' can be summarized by the crossword solution 'LISP'. LISP stands for 'List Processing Language', which is a computer programming language developed in 1958. It is used for artificial intelligence applications, such as natural language processing and machine learning. LISP is known for its ability to process lists of data quickly and efficiently. It is also known for its use of symbolic expressions, which allow for more concise and expressive code.