valid, sound, cogent, convincing, telling mean having such force as to compel serious attention and usually acceptance. valid implies being supported by objective truth or generally accepted authority.

VALID definition: sound; just; well-founded. See examples of valid used in a sentence.

VALID definition: 1. based on truth or reason; able to be accepted: 2. A ticket or other document is valid if it is…. Learn more.

These adjectives describe assertions, arguments, conclusions, reasons, or intellectual processes that are persuasive because they are well founded. What is valid is based on or borne out by truth or fact …

Definition of valid adjective in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

(of an inference or argument) having premises and conclusion so related that whenever the former are true the latter must also be true, esp (formally valid) when the inference is justified by the form of the …

Jan 25, 2026 · Adjective valid (comparative more valid, superlative most valid) Well-grounded or justifiable, pertinent. Synonyms: arguable, groundly, proper, warrantable I will believe him as soon as …

valid, adj. meanings, etymology, pronunciation and more in the Oxford English Dictionary

From Longman Business Dictionary val‧id /ˈvælɪd/ adjective a valid document or agreement is legally acceptable, often for a fixed period of time The court ruled that the firm’s patent is valid and …

Something that is valid is important or serious enough to make it worth saying or doing. Most designers share the unspoken belief that fashion is a valid form of visual art.