How to speak sweetly or vice versa?

I am sharing with you my experiences. Some people on listening the question reply in a half manner way. When we talk with friends they are not in a mood to reply correctly or cordially but some our friends speak sweetly .It also depends on the timing intention. We know that different types of irritating replies are there but one should try to adopt positive attitude and speak politely to run the life no need to  create any irritation among ourselves.  If you want to know more irritated words or attitude. I would like to submit the following like those who speak mincingly, not to intend to reply completely , those who change the track immediately, those who speak without prior thinking , those who speak other than the common language.