Close off phrase
In meaning 1,
To prevent someone from accessing a road or an opening by putting up barriers at one end or in front of it. (a noun or pronoun can be used between "close" and "off.")
The police closed off this passageway since an infected case was discovered.
The police close off all the roads out of the city to ensure that the serial killer won't be able to flee this city.
To isolate oneself to avoid undesirable interactions with people or become introverted. (a reflexive pronoun can be used between "close" and "off.")
After being bullied, Mary closed off and didn't go out of her house for weeks.
Closing yourself off for such a long time after break-up won't lift your mood.
To say or show that you will not listen to views, ideas, or opinions different from yours. (a reflexive pronoun can be used between "close" and "off.")
I hate talking to John. He's always closing himself off.
Don't close yourself off! Be open-minded, my friend!
To withdraw completely and permanently from a relationship, circumstance, or attachment.
To have to regret, withdraw or feel foolish about what they have said.
1. To move someone or something away from someone or something else.
2. To withdraw from someone or something.
3. (Of a vehicle) To start moving ahead and away.
4. To move ahead of other competitors in a contest.
Use to describe the act of keeping one's position against attack or opposition.
The verb "close" must be conjugated according to its tense.
The origin of this phrase is not clear.