Word
valid
US/ˈvæɫɪd/
UK/vˈælɪd/
Definitions
01legally acceptable
B1 · Intermediate Law
adj. officially acceptable and able to be used because it follows the rules.
adj. legally or officially binding or acceptable; meeting the necessary requirements for use.
日本語:有効※
“You need a valid passport to travel to another country.”
“The ticket inspector noted that the passenger's pass was no longer valid, as it had expired three days prior to the journey.”
Usage
Often used with documents like passports, tickets, or contracts.
02logical or reasonable
B2 · Upper Intermediate Academic
adj. based on sensible reasons or facts that people can agree with.
adj. well-grounded or justifiable; based on truth or sound reasoning.
日本語:妥当な※
“She raised some valid points during the meeting about the budget.”
“While the theory is controversial, the researcher provided several valid arguments supported by recent statistical data.”
Usage
Commonly describes points, arguments, reasons, or concerns.
Synonyms
Antonyms
03logical truth
C1 · Advanced Mathematics Technical · Academic
adj. in logic, an argument where the conclusion must be true if the starting ideas are true.
adj. relating to an argument whose form is such that if the premises are true, the conclusion must also be true.
日本語:妥当※
“The professor explained why the student's conclusion followed a valid logical path.”
“In formal logic, a valid argument does not necessarily have true premises, but its structure ensures the conclusion follows from them.”
Teaching tip
In academic contexts, remind students that 'valid' refers to the structure of the logic, while 'true' refers to the facts themselves.
Synonyms
Antonyms
Collocations
Common phrases and expressions where native English speakers use the word “valid” in context.
Adjective
01. equally valid
“Both arguments are equally valid, making it difficult for the committee to reach a final decision.”
adv + adj
02. longer valid
“Please note that your old parking permit is no longer valid after the end of this month.”
adv + adj
03. valid consent
“The doctor must ensure that the patient has given valid consent before proceeding with the surgery.”
adj + noun
04. valid inference
“Based on the evidence provided, the detective made a valid inference about the suspect's motives.”
adj + noun
05. valid method
“Scientists are still searching for a valid method to measure the long-term effects of the new drug.”
adj + noun
06. valid votes
07. merit valid
Real-World Examples
“Less than 1% voted by mail, and every single Voter had to have a VALID Photo Identity Document.” 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”).
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.
Word family
NOUN
ADJECTIVE
Related words
Domain
- Exam level
- CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.B2 FirstIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.5.5–6.5TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 4.0–4.572–94TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.785–944
- Frequency
- Common
- Level
- B2 · Upper IntermediateOxford
- Updated
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QR code
englishreference.com/q/valid
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「日本語」 data: JMdict (EDRDG), CC BY-SA 4.0