The term 'exceptionless' is an adjective that means without exception or without any exceptions. It is often used to describe a situation where something is true in all cases, with no exceptions. For example, a law may be described as exceptionless if it applies to everyone without any exceptions. In the crossword, the solution for the term 'exceptionless' was 'EVERY', which is another word for universal or all-encompassing. This emphasizes the idea that something is true in all cases, with no exceptions.