The meaning of VALID is having legal efficacy or force; especially : executed with the proper legal authority and formalities. How to use valid in a sentence. Synonym Discussion of Valid.

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.

What is valid is based on or borne out by truth or fact or has legal force: a valid excuse; a valid claim. What is sound is free from logical flaws or is based on valid reasoning: a sound theory; sound …

Definition of valid adjective from the Oxford Advanced Learner's Dictionary. that is legally or officially acceptable. Do you have a valid passport? He bought a bus pass valid for one month. They have a …

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.

Valid definition: Well grounded; just.

Jan 20, 2026 · Adjective valid (comparative more valid, superlative most valid) Well-grounded or justifiable, pertinent.

WordReference Random House Learner's Dictionary of American English © 2025 val•id /ˈvælɪd/ adj. sound; just; well-founded: a valid argument. having proper authority; that can be used legally or …

Valid refers to something that is logical, well-founded, or acceptable according to established rules, principles, or standards. It implies coherence, soundness, and correctness in reasoning, …