General:
* Whole
* Complete
* Total
* Full
* All
More specific:
* Comprehensive (covering all aspects)
* Universal (applicable to everyone or everything)
* Absolute (without any exceptions or limitations)
* Sum total (the entire amount)
* In its entirety (the whole thing)
The best word to use will depend on the specific situation. For example, if you're talking about a book, you might say "the entire book" or "the whole book." But if you're talking about a concept, you might say "a comprehensive understanding."