The crossword solution for the term 'NO ___, AND, OR BUTS!' is IFS, which stands for 'If and only if'. This is a logical operator used in mathematics and computer science. It is used to express a condition that must be true for a statement to be valid. In other words, it means that something must be true in order for something else to be true. For example, 'IFS you want to pass the test, you must study.'