valid
/ˈvæl.ɪd/(adjective)
AWL Sublist 3CEFR B2IELTS Band 7.0 - 9.0
Academic Definition
Having a sound basis in logic or fact; legally or officially acceptable or binding.
Key Academic Collocations
Click to copyWord Family & Derivatives
validvalidatevalidationvalidityinvalidinvalidation
Lexical Alternatives (Synonyms)
soundlegitimatejustifiablecogentauthentic
Academic Sample Sentences in Context
"Opponents of nuclear power present valid concerns regarding the safe, long-term containment of radioactive waste."
"The laboratory findings remain fully valid, having been independently replicated across six research institutions."
"A passport must remain valid for at least six months beyond the anticipated completion of international travel."
IELTS Examiner Scoring Strategy (Lexical Resource)
Use 'While this is a valid concern, it must be balanced against...' to construct concession paragraphs in Task 2.