discomfort/discomfit

Recently, dictionaries have come to accept these two as almost synonymous. Purists, however, disagree.

It should be fairly obvious (even to you) that discomfort refers to a mild pain or a slight uneasiness. Failing the test was very discomforting because he thought he had prepared well.

Well, what about discomfit? Glad you asked. This one actually means "a rout or a total defeat." Notice the difference? I thought so.

Now that you are aware of the difference, stop using them as synonyms.

It is discomforting to think that if you continue using these words interchangeably, their correct uses will become completely discomfited. You don't want that on your conscience, do you?