A woman proudly displaying her valid driver's license.
- An example of valid is a driver's license that hasn't expired.
- An example of valid is someone giving evidence that proves an argument.
The definition of valid is something effective, legally binding or able to withstand objection.
- having legal force; properly executed and binding under the law
- well-grounded on principles or evidence; able to withstand criticism or objection, as an argument; sound
- effective, effectual, cogent, etc.
- Archaic robust; strong; healthy
- Logic correctly derived or inferred according to the rules of logic
Origin of validFrench valide from Classical Latin validus, strong, powerful (in ML, valid) from valere, to be strong: see value
- Well grounded; just: a valid objection.
- Producing the desired results; efficacious: valid methods.
- Having legal force; effective or binding: a valid title.
- Logic a. Containing premises from which the conclusion may logically be derived: a valid argument.b. Correctly inferred or deduced from a premise: a valid conclusion.
- Archaic Of sound health; robust.
Origin of validFrench valide from Old French from Latin validus strong from valēre to be strong ; see wal- in Indo-European roots.
- va·lid′i·ty val′id·ness
valid sound 2cogent convincing
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 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 principles. Something cogent is both sound and compelling: cogent testimony; a cogent explanation. Convincing implies the power to dispel doubt or overcome resistance or opposition: convincing proof.
(comparative more valid, superlative most valid)
- Well grounded or justifiable, pertinent.
- I will believe him as soon as he offers a valid answer.
- Acceptable, proper or correct.
- A valid format for the date is MM/DD/YY.
- Do not drive without a valid license.
- Related to the current topic, or presented within context, relevant.
- (logic) A formula or system that evaluates to true regardless of the input values.
- (logic) An argument whose conclusion is always true whenever its premises are true.
- An argument is valid if and only if the set consisting of both (1) all of its premises and (2) the contradictory of its conclusion is inconsistent.
- (in logic: argument whose conclusion is always true whenever its premises are all true): sound
From Middle French valide
valid - Legal Definition
- Legally binding, such as a valid agreement.
- Having merit, as in, “given the facts presented in this case, it is valid to conclude that she did what she was charged with having done.”