The crossword solution for the term 'needless to ___' is 'SAY, ' which is a three-letter word. The phrase 'needless to SAY' is an idiom used to emphasize that something is obvious or self-evident, and it is often used to introduce a statement that is expected to be accepted without question. It is also used to preface a statement that is likely to be accepted as true by the listener. This phrase is often used in conversation and in writing to add emphasis to a point.