Let's list often confused terms

Phase / faze = I went through a phase where egregious grammatical mistakes bugged the h3!! out of me. Now they don’t faze me.

Jive / jibe = The author’s use of jive in the otherwise scholarly article didn’t jibe with his claim of punctilious academic writing.

Holistic =/= homeopathy. My pet’s veterinarian incorporates holistic concepts in his practice, but draws the line at including junk sciences such as “homeopathy”.

Lay/lie = oh, what’s the use with trying to sort out this pair? It’s a lost cause.

you do know that is spelled “definitely”, right?

flaunt/flout
flair/flare

Well DUH, Eagle Eyes. I was being funny.

Make that “Yes, Eagle Eyes.” No need for me to be so pissy about it.

This. I am a lousy speller*, but this drives me up a wall.
Your brakes stop the car, if they break then they are broken.

*Hey if I can get it close enough that spell check can find I consider it a win

Ah! Thanks for that! I always thought carom and careen were two versions of the same word (meaning “ricochet”). Thanks for the correction.

I can typically get this one right in writing when I have a second to think it through. But in speech, I probably pick the wrong one about half the time. I think of myself as a reasonably intelligent and articulate person, but lay/lie still trips me up sometimes.

Maybe this one isn’t common, but a dear friend of mine, who may be the smartest person I know, says “weary” when he should say “wary”. As in, “I am weary of the unintended consequences of that action.” I think he’s conflating “wary” and “leery” into one word. Dunno if others fall prey to the same thing.

Bit esoteric, but when software company Pixologic created their 3D rendering software, ZBrush, they needed a term for a new kind of pixel. A regular pixel has an X and Y coordinate, plus a color. Pixologic needed to store all that, plus a Z coordinate for depth. And so they invented:

The Pixol.

Say those two terms out loud a few times. Pixel. Pixol. Pixel. Pixol.

You fuckers couldn’t have come up with something just slightly more original than that?

No, it’s a fair verb, meanin to cause or bring about. I’ve heard it used often in medical terminology, as in “Smoking effects cancer.”

Arse / Elbow

I will NEVER be able to keep these two straight.

Nobody confuses affect and effect any more. Impact has been substituted for both!

And while we’re at it, “affect” can also be a noun, in similarly rare contexts.
XKCD

Inter / Intern

Disinterested means impartial; uninterested means you ain’t interested in the topic at hand.

Must be tough for the college kids where you work.

Oh. That must explain the whooshing sound I heard last night.

Quiet and quite are quite different words with quite different meanings. They shouldn’t be that hard to tell apart.

One I got caught out with the other day: continuous, contiguous and continual. But in this case, even knowing the definitions it’s tricky to pick the right one in some situations.

And when people take “consciousness” in a philosophical debate to just mean alertness / activity i.e. the opposite of “unconscious”.
(I’m not sure if this counts, as it is one definition of consciousness, but it’s almost never the meaning intended in such debates).

IMHO, the auto-correcting of “its” to “it’s” is actually really convenient - it saves two keystrokes on a word that is in about every other sentence, as opposed to its (heh) much less common pronoun brother. You just need to make sure to “x” the suggestion when you really do want to spell “its”.

Nauseous and nauseated.

Came across the best definition in Strunk and White’s The Elements of Style.

Now I can’t help but make the distinction when watching TV where I find that the overuse of nauseous is more accurate than the writers intended.