Definition from macmillandictionary.com
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He is no longer able to differentiate between fantasy and reality.
a distorted sense of reality
What she had to do, finally, was face reality.
Her version of events bore absolutely no relation to reality.
This is a man who has lost touch with reality.
the grim realities of war
After years of hard work, his dream has become a reality.
Our politicians are completely out of touch with the realities of the situation.