Extraneous Verbiage and Other Pomposity

Simple, simple rule for clear writing: If you wouldn't use the word or phrase in conversation, you probably don't need it in writing, either. Two quick examples:

utilize: It means use. Use use. You'll save yourself keystrokes and your reader time. And people will focus on what you're trying to say, rather than thinking you're trying to sound impressive, and wondering if that's because you're trying to hide the fact that you have no idea what you are talking about.

hitherto, heretofore, thenceforth: When was the last time you used these words in conversation? Do you even know what they mean? Unless you are a lawyer or a Shakespearean actor, you don't need them.

This is not to say that we should write exactly as we speak. But why be less clear in writing than we are in conversation? English isn't that difficult: you speak it every day!