When you annoy someone, you really rub them the wrong way. Often, the things that annoy people the most are those that are repeated again and again, like your habit of snorting every time you laugh or the screeching sound that your dishwasher makes day after day. Although the word annoy comes from the Latin phrase esse in odio, "it is hateful to me," its meaning now is less "hateful" and more "bothersome."