term:

Valid

valid adj

1 : having legal efficacy or force [a license]
;esp
: executed with proper authority and form [a contract] [a search]
2 : having a legitimate basis
: justifiable [a reason for terminating the employee]
3 : appropriate to the end in view
va·lid·i·ty [və-li-də-tē]
n

val·id·ly adv

Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.