validadjective
uk/ˈvæl.ɪd/us/ˈvæl.ɪd/B2 based on truth or reason; able to be accepted:
a valid argument/criticism/reason
My way of thinking might be different from yours, but it's equally valid.
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invalid
B2 A ticket or other document is valid if it is based on or used according to a set of official conditions that often include a time limit:
My passport is valid for another two years.
having legal force:
Is this contract/ticket/agreement still valid?
More examples
- The judge remarked that ignorance was not a valid defence.
- For the experiment to be valid, it is essential to record the data accurately.
- Their arguments were valid a hundred years ago and they still hold good today.
- You need to trawl through a lot of data to get results that are valid.
- The voucher is valid between July and December and entitles you to 10% off all overseas flights.
Thesaurus: synonyms and related words
Suitable and acceptable
- able
- acceptable
- accepted
- accordingly
- age-appropriate
- correct
- doctor
- felicitous
- fit in
- fit in with sth
- fitting
- germane
- horse
- keeping
- rightly
- satisfaction
- seasonable
- seemly
- sit
- sit right/well (with sb) idiom
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You can also find related words, phrases, and synonyms in the topics:
Allowing and permitting
Legal & illegal
validity
noun [ U ] uk/vəˈlɪd.ə.ti/us/vəˈlɪd.ə.t̬i/
C2
This research seems to give/lend some validity to the theory that the drug might cause cancer.
validly
adverb uk/ˈvæl.ɪd.li/us/ˈvæl.ɪd.li/