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Valid Val"id, a. [F. valide, F. validus strong, from valere to be strong. See Valiant.] [1913 Webster] 1. Strong; powerful; efficient. [Obs.] ``Perhaps more valid arms . . . may serve to better us. --Milton. [1913 Webster]

2. Having sufficient strength or force; founded in truth; capable of being justified, defended, or supported; not weak or defective; sound; good; efficacious; as, a valid argument; a valid objection. [1913 Webster]

An answer that is open to no valid exception. --I. Taylor. [1913 Webster]

3. (Law) Having legal strength or force; executed with the proper formalities; incapable of being rightfully overthrown or set aside; as, a valid deed; a valid covenant; a valid instrument of any kind; a valid claim or title; a valid marriage. [1913 Webster]

Syn: Prevalent; available; efficacious; just; good; weighty; sufficient; sound; well-grounded. [1913 Webster]