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.
I have mixed feelings about those sorts of things. When I see it done by interesting young people, I think it's very valid. But when established photographers, people in their forties, copy me and get a lot of money, well, I find that to be very stupid. Helmut Newton
You can get along very well in this world by simply coming up with a quantity of reasonably valid statements. B. F. Skinner
Well, in the first place, military service, they don't call it service for nothing. You are actually serving your country. And it is a worthy and valid vocation. Rick Warren
I shall go further and say that even if an examination of the past could lead to any valid prediction concerning man's future, that prediction would be the contrary of reassuring. Julien Benda
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