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 just think my children and your children would be much better off and much more successful getting married and raising a family, and I don't want them brainwashed into thinking that homosexuality is an equally valid and successful option - it isn't. Carl Paladino
No work or love will flourish out of guilt, fear, or hollowness of heart, just as no valid plans for the future can be made by those who have no capacity for living now. Alan Watts
It is nice to have valid competition; it pushes you to do better. Gianni Versace
In order to govern, the question is not to follow out a more or less valid theory but to build with whatever materials are at hand. The inevitable must be accepted and turned to advantage. Napoleon Bonaparte
You can get along very well in this world by simply coming up with a quantity of reasonably valid statements. B. F. Skinner
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