1. A fixed or real state; truth; fact.
Know for a certainty, that the Lord your God will no more drive out these nations. Josh. 23. Luke 1.
2. Full assurance of mind; exemption from doubt.
Certainty is the perception of the agreement or disagreement of our ideas.
3. Exemption from failure; as the certainty of an event, or of the success of a medicine.
The certainty of punishment is the truest security against crimes.
4. Regularity; settled state.