1. verb, slang To go away; to get lost. Often used as an imperative. Mrs. Durst was so curmudgeonly that she was even known to tell carolers to kiss off. I'm tired of your constant complaining! Kiss off, will you?

2. verb, slang To be forced to accept the loss or end or something. If you keep coming to practice late, you can kiss off your starting position.

3. verb, slang To dismiss, reject, or abandon, often with contempt and/or without much tact or consideration. In this usage, a noun or pronoun is often used between "kiss" and "off." Whenever I go in there to shop, I feel like the snobby salesgirls just kiss me off and pay attention to the richer-looking customers.

4. verb, slang To die. If they invent a hoverboard before I kiss off, I'm definitely going to try it, no matter how old I am.

5. verb, slang To murder someone. In this usage, a noun or pronoun can be used between "kiss" and "off." Manny was an enforcer, which meant he kissed off anyone who posed a threat to the organization. Is he gonna stay quiet, or do we need to kiss him off?

6. noun, slang Death. In this usage, the phrase is often hyphenated or spelled as one word. Mom-Mom always says she hopes that she makes it to the old country before the big kiss-off.

7. noun, slang An act of dismissing, rejecting, or abandoning something, often with contempt and/or without much tact or consideration. In this usage, the phrase is often hyphenated or spelled as one word. I tried to apply for a job there but I got the kiss-off from the hiring manager.