Definition of valid adjective from the Oxford Advanced American Dictionary

        

    valid

     adjective
    adjective
    NAmE//ˈvæləd//
     
     
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  1. 1that is legally or officially acceptable a valid passport a bus pass valid for 1 month They have a valid claim to compensation.
  2. 2based on what is logical or true She had valid reasons for not supporting the proposals. The point you make is perfectly valid.
  3. 3(computing) that is accepted by the system a valid password opposite invalid1
 
adverb The contract had been validly drawn up. It can be validly argued that they were not to blame.
AWL Collocationsvalidvalid adjectiveofficially or legally acceptable; logical or trueclinically, empirically, experimentally, scientifically, statistically externally legally deductively equally universallyAn argument either way could be equally valid.assumption, generalization hypothesis, theory methodology, model instrument test finding, result conclusion, inference argument, reason criticismThere were some potential flaws in the study design that made it difficult to draw valid conclusions from these data.seem remain consider something, deem something accept something as, regard something asThe conclusions of these studies remain valid for both large and small numbers of molecules.validate verbassumption hypothesis, theory methodology, model instrument test finding, result conclusion, inference argument accuracyThis study validated findings from earlier studies.clinically, empirically, experimentally, scientifically, statistically externally extensively rigorouslyA similar procedure had been scientifically validated.validation nounclinical, empirical, experimental, scientific, statistical external extensive rigorousThis lack of empirical validation has led to psychology's dismissal of Toman's theory.validity nounchallenge, dispute, doubt, question assess, evaluate, test affirm, attest to, confirm, demonstrate, verifyThe author questions the validity and reliability of standardized tests.assumption hypothesis, theory model instrument test finding, result conclusion, inference argumentTwo tests were performed to assess the validity of this theory. Consistent results emerged across the study, which attests to the validity of the findings.
See the Oxford Advanced Learner's Dictionary entry: valid