Time to clear up a few words that might give you grief from time to time.
Are you talking about showing off? Then you don’t mean flout, you mean flaunt. To flout is to ignore the rules. You can think of flaunt as the longer showier one, with that extra letter it goes around flaunting. You can flout a law, agreement, or convention, but you can flaunt almost anything.
Phase is the more common word and usually the right choice, except in those situations where it means “to bother.” If something doesn’t bother you, it doesn’t faze you. Faze is almost always used after a negative, so be on alert if there is an isn’t/wasn’t/doesn’t nearby.
Loath is reluctant or unwilling, while to loathe is to hate. You are loath to do the things you loathe, which makes it confusing, but you can keep them clear by noting whether the word has a "to be" verb on one side and a to on the other (he is loath to, I would be loath to), in which case loath is correct, or it can be substituted by hate (I loathe mosquitoes), in which case you need the e on the end.
The word wave is far more frequent than waive and has a more concrete meaning of undulating motion. It’s often used for waive, "to give something up," perhaps because it fits well with the image of someone waving something away. But when you waive your rights, or salary, or contract terms, you surrender them. You can think of the extra i in waive as a little surrender flag in the middle of the word.
Intensive is a word that means strong or extreme, but that’s not what’s called for in this phrase. To say “practically speaking” or “in all important ways” the phrase you want is “for all intents and purposes.”
Run the gauntlet and run the gamut are both correct, but mean different things. Running the gauntlet was an old type of punishment where a person was struck and beaten while running between two rows of people. A gamut is a range or spectrum. When something runs the gamut, it covers the whole range of possibilities.
This pair causes the most trouble in the phrase sneak peek where the spelling from sneak bleeds over to peek, causing it to switch meaning from "a quick look" to "a high point." If you imagine the two Es as a pair of eyes, it can help you remember to use peek for the looking sense.
Fortuitous means by chance or accident. Because of its similarity to fortunate, it is commonly used to refer to a lucky accident, but it need not be. Having lightning strike your house and burn it down is not a lucky event, but according to your insurance company it will be covered because it is fortuitous, or unforeseen.
To refute a claim or an argument doesn’t just mean to offer counterclaims and opposing arguments. That would be to respond or rebut. To refute is to prove that a claim is false. If you refute, the disagreement should be over because you’ve won. If someone accuses you of not having paid for something, you refute the accusation by producing the receipt.
Clancy's comment: I hope you have printed this off and plastered it on the wall of your office ... With all the other important tid bits.