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.
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.
Let me explain something about guitar playing. Everyone's got their own character, and that's the thing that's amazed me about guitar playing since the day I first picked it up. Everyone's approach to what can come out of six strings is different from another person, but it's all valid. Jimmy Page
valid in Danish is gyldig
valid in Dutch is gangbaar, geldig, geldend, vigerend
valid in French is valable
valid in Hungarian is indokolt, megalapozott
valid in Italian is valevole
valid in Norwegian is gyldig