Avoid an unwelcome mistletoe kiss by saying you have a cold - or feigning a cough or sneeze as the person closes in on you.

避开一个不受欢迎并且死缠难打的吻，你可以说你感冒了- - -或者但一个人接近你的时候你可以假装感冒和打喷鼻。

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Last year the State Department declared Venezuela's consul general in Miami persona non grata -- Latin for unwelcome or unacceptable person -- and expelled her from the United States.

CNN: U.S. expels 2 Venezuelan diplomats

Be clear about what you want and say it to the person, rather than focusing on the unwelcome behavior.

WSJ: Setting Boundaries With Family Members