1. something that is true and can be proven
2. a piece of information that is known to be true
3. the actual situation or circumstances

Examples

• It’s a fact that water boils at 100 degrees Celsius.
• The detective gathered all the facts about the case.
• In fact, I’ve never been to Paris before.
• She presented the facts clearly during her presentation.
• The fact remains that we need more evidence.
• These are the basic facts about climate change.
• Is that opinion or fact?