valid
Pronunciation:
/ˈvælɪd/adjective
Definitions
Well grounded or justifiable, pertinent.
Example: I will believe him as soon as he offers a valid answer.
Acceptable, proper or correct; in accordance with the rules.
Example: A valid format for the date is MM/DD/YY.
Related to the current topic, or presented within context, relevant.
Of a formula or system: such that it evaluates to true regardless of the input values.