"Pragmatic" is an adjective that describes a way of dealing with challenges that takes a problem's specific situation into account instead of relying on preconceived ideology or theory. The word comes from the Latin "pragmaticus," which means "skilled in business."
Here is how the word works in a sentence: "John has a pragmatic approach to life: Instead of relying on grand theories or religious values, he evaluates every problem on its own merits." The belief in a pragmatic approach is called "pragmatism," and a person who follows such a belief is a "pragmatist." A commonly used synonym for "pragmatic" is "practical."