Top Definition
A theory, claim, or statement assumed to be true due to popular agreement. Said claim can be either backed up by facts or "reliable" anecdotes.

This is a portmanteau of "fact" and "reality".
Even though we all know 2 + 2 = 5, the class decided, that in factuality, it equals 4. They are such Sheep.

"God exists" is a factuality.

String theory is not a factuality, because not enough people take it for granted.
by Sudo-Nimb December 26, 2009
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