noun
fact
FAKT/fækt/
Something real or known to be true.
The melting ice provides observable evidence of the fact that warmth changes ice into water.

Etymology
From “to do,” a fact was originally “a thing done.” The meaning shifted from an action to something that actually occurred, and then to something known to be true.
In context
the positivist original criterion a factual of what a fact is was essentially humes a fact is something you could see hear smell it
More examples
- Check your facts.
- It is a fact that water expands when freezing.
- We need more facts before deciding.
Forms
fact · facts
factual adjective — based on real or established information
Similar words
- truth
- May suggest a general principle rather than a specific verified detail.