A list of words/phrases that will make me lose respect for whatever you're saying if I hear them:
Well (as in, "Well, actually" or "Well, you know")
Probably (I use this one all of the time and I always wince)
Seriously (as in, "Srsly?")
Thru instead of "through" on anything that isn't a comic/text message
IMO or worse, IMHO
Strangely, "whatever" didn't make it onto the list even though it's apparently polled the most annoying word of the year. Huh.
Happy Valentine's Day!