valid

/ˈvælɪd/ adjective

Definition

GOOD REASONS › based on good reasons or facts that are true: a valid argument

DOCUMENT › A valid ticket or document is legally acceptable: The ticket is valid for three months. → Opposite invalid

validity

/vəˈlɪdəti/ noun [U]

(Definition of valid adjective from the Cambridge Learner's Dictionary © Cambridge University Press)

real or true

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