I really like this thread, because I now know how to make you all be attentive or cringe!! *laughs manically*
...ehem...
I really don't suppose I have any favorite or other words, but if I had to choose...
Any curse words annoy me...though I try to be gracious, but the English language has much better uses.
It also ticks me off when people take the Lords name in vain...( can I please have a good solid period of time...maybe a month, or even a week...where I don't hear this?)
As far as likable words...fun words are always endearing! These may include scrumtrilescent, tremacular, fantastical, ext...
Also, it's not so much the word as how it's used.
For instance, the word 'well' may have many connotations. When watching the movie Alpha & Omega, you may notice a scene where the character Lily uses "well..." as a response. I've seen the movie nearly 20 times, and this moment still makes me laugh! I'm laughing as I'm typing this... XD