close off

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close off

1. To prevent access to a particular area or thing. In this usage, a noun or pronoun can be used between "close" and "off." We had to close off that section of the restaurant for a private party. I had to take a detour on my way home because the water department closed off a bunch of streets.
2. To avoid emotional connection with others; to isolate. In this usage, a reflexive pronoun can be used between "close" and "off." Todd really closed himself off after his last break-up. I have a hard time making friends because I usually close myself off from other people.
3. To refuse to listen to viewpoints, ideas, or opinions that differ from one's own. In this usage, a reflexive pronoun can be used between "close" and "off." Grandpa, you can't just close yourself off to the ways of the modern world. Can you please listen to what I think, instead of automatically closing yourself off?
See also: close, off

close something off

to prevent entrance into something; to block something off. Please don't close this passageway off. They closed off the passageway anyway.
See also: close, off

close off

v.
To prevent passage along or through something: The police closed off the main avenue for a parade. Park rangers closed the lake off to motorboats.
See also: close, off
References in periodicals archive ?
Keep in mind that closing off a room will cause walls of adjoining rooms to be cooler; and if this room is on the first story, the floor of the room above it will also be cool.
The legendary gallcrist Konrad Fischer, a champion of Conceptual and Minimalist art on both sides of the Atlantic, created his first gallery space in 1967 by closing off a courtyard passageway in the Neubruckstrasse in Dusseldorf.
VALENCIA - A construction crew using a backhoe to dig in a residential street ruptured a natural gas line, forcing the evacuation of three homes and closing off the street for three hours, authorities said.
A CHEMICAL tanker spilled its load today closing off the road into Barry Docks.
Embolization is a minimally invasive procedure that can reduce tumors and vascular malformations by closing off the blood vessels that feed them.
closing off streets,'' said Glendale resident Steve Hedricks, referring to Caruso's planned closure of Harvard and Orange streets.
and police rushed to the scene, closing off Platt Avenue at Victory Boulevard and evacuating about 100 residents as well as occupants of nearby businesses and a public library branch across the street.
The situation is obviously likely to become more dangerous so we will be closing off the road for the rest of the evening.