The state of being accurate; being free from error; exactness; correctness
Exact conformity to truth, or to a rule or model; degree of conformity of a measure to a true or standard value.
The state of being valid, authentic or genuine.
The genuinity - as distinguished from the efficacity or the regularity - of a sacrament as a result of some formal dispositions being fulfilled.
State of having legal force.
A quality of a measurement indicating the degree to which the measure reflects the underlying construct, that is, whether it measures what it purports to measure (see reliability).