I don't think there's any words that bother me when I hear them (barring overused "like"s), but there's one word I absolutely hate reading.

Sneaked.

UGH. I grew up on saying/writing snuck, and so seeing "sneaked" always fires up the grammar nazi inside of me because it sounds/looks wrong. But historically, "sneaked" is the grammatically correct way to say/spell it, and "snuck" is a bit of a dialectal thing--not necessarily incorrect at the same time.

It's like "Leapt" vs "Leaped" vs "Lept"

UGH. ENGLISH