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English definition of “valid”

valid

adjective    /ˈvæl·ɪd/
based on truth or reason ; able to be accepted : The money was gone, and the only valid conclusion was that someone had stolen it. A valid document is legally acceptable , usually because it has been done according to official rules : You must have a valid driver’s license to drive a car . validity    /vəˈlɪd·ɪ·t̬i/ noun [U] Some experts questioned the validity of the president’s ideas . validly  /ˈvæl·ɪd·li/ adverb
(Definition of valid adjective from the Cambridge Academic Content Dictionary © Cambridge University Press)
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