"All sundry" is a phrase used to indicate a broad and inclusive range of things or people. It means everything and everyone without exception. Some synonyms for this phrase include "one and all," "one and sundry," "across the board," "across-the-board," and "full spectrum." The phrase can also be replaced with "all-encompassing," "comprehensive," "ubiquitous," or "pervasive." People may also use the word "universal" to express the same concept. No matter which synonym you decide to use in place of "all sundry," the meaning remains the same - it describes everything and everyone in an all-encompassing manner.