Word
substantiate
Phoneticssub·stan·ti·ate, stress on the second syllable
US/səbˈstænʃiˌeɪt/
UK/səbstˈænʃɪˌeɪt/
Definition
v. to prove that something is true or real by providing facts or evidence. You use this when you want to show that a claim has a solid reason behind it.
v. to provide evidence or proof to support a claim, theory, or fact. Transitive — requires a direct object representing the claim or evidence.
Examples
“The scientist needs to substantiate his theory with new data.”
“The lawyer asked for documents to substantiate the claim that the company had broken the contract.”
“While the initial report suggested a significant drop in sales, the final audit failed to substantiate these figures, revealing that the decline was actually a minor seasonal fluctuation.”
Examples
simple
“The scientist needs to substantiate his theory with new data.”
contextual
“The lawyer asked for documents to substantiate the claim that the company had broken the contract.”
complex
“While the initial report suggested a significant drop in sales, the final audit failed to substantiate these figures, revealing that the decline was actually a minor seasonal fluctuation.”
Real-World Examples
“Anti-greenwashing rules generally ask whether claims are clear, accurate and substantiated.” “If a claim is substantiated, the plagiarist is seen as sloppy or lazy at best, and fundamentally dishonest at worst.” Etymology
From Medieval Latin substantiatus (“given substance”), from the verb substantiare, first used 1657.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.
- 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.C1 AdvancedIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.7.0–8.0TOEFL 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: 5.0–5.595–113TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.945–990
- Frequency
- Occasional
- Level
- C1 · Advanced
- Updated
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