Hello Smiler, It is not the words themselves that are annoying ,rather them being in a certain context or a reaction in a certain situation. As you mentioned when someone doesn't seem to care for your feelings and answers "anyway" it will annoy you, while the same word could be less annoying in another situation. In general any word that shows apathy, disdain ,discouragement or negligence will be annoying and the list is endless ;)

I hate the word "ok anyway " or "sorry ,sorry " because sorry means nothing ,the hurt is actually created

Hay,whats up

I am hate to hear 也就是说 at morning meeting in my company. It appears so often in almost every sentence and break it into pieces and make it mean completely nonsense. I cann't bear such speech any more.

“切” 如果是朋友之间 开玩笑的时候，觉得无所谓。如果是带着藐视的状态，真的很讨厌，心里会默默诅咒下 呵呵。 另外，我很讨厌人家说 那字，后面还拖长音。感觉这人有点超~自我感觉良好