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It means that something could possibly happen. It is highly unlikely it will ever happen, but there is a chance it could happen.
1. Obama can theoretically never be a good president.

2. Theoretically the Illuminati are real.

3. Theoretically it could happen.
by The Inprectichous Man January 30, 2015
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Oct 3 Word of the Day
I couldn’t care less (but one must keep up appearances, right?)
Frenemy has a family tragedy. "Thoughts and prayers."
by November 05, 2018
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