valid

Adjective

Based on sound reasoning or fact; legally acceptable.
well grounded in logic or truth or having legal force
- "a valid inference"
- "a valid argument"
- "a valid contract"

Adjective Satellite

still legally acceptable
- "the license is still valid"

Adj

Well grounded or justifiable, pertinent.
Acceptable, proper or correct; in accordance with the rules.
Related to the current topic, or presented within context, relevant.
Of a formula or system: such that it evaluates to true regardless of the input values.
Of an argument: whose conclusion is always true whenever its premises are true.
Genuine - as distinguished from efficient or regular - sacrament.

Examples

A valid format for the date is DD/MM/YY.
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.
Do not drive without a valid license.
He questioned if his opponent’s unconventional word was truly VALID, demanding a dictionary check.
I will believe him as soon as he offers a valid answer.

Origin / Etymology

Borrowed from Middle French valide (“healthy, sound, in good order”), from Latin validus, from valeō (“to be strong, to be healthy, to be worth”) + -idus, from Proto-Indo-European *h₂welh₁- (“be strong”).

Antonyms

invalid, nonvalid

Scrabble Score: 9

valid: valid Scrabble (US) TWL Word
valid: valid Scrabble Word in Merriam-Webster MW Dictionary
valid: valid Scrabble Word in International Collins CSW Dictionary

Words With Friends Score: 11

valid: valid Words With Friends Word