Prove has past tense proved; past participles proved and proven are both documented, with proven also established as an adjective. The guide keeps tense, participle, regional, and sense boundaries explicit rather than reducing the pair to a blanket substitution rule.
ReviewedEvidence1 sourceSectionEnglish Usage
Quick answer
Use “proved” for the ordinary past tense. As a past participle, both “proved” and “proven” occur; “proven” is also common as an adjective such as “a proven method.”
Key details
Confusion Familyverb-form-variation
Rule Familyinflection-and-usage
TermsProved, Proven
Variant ScopeProve has past tense proved; past participles proved and proven are both documented, with proven also established as an adjective.
Further guidance
Core difference
Use “proved” for the ordinary past tense. As a past participle, both “proved” and “proven” occur; “proven” is also common as an adjective such as “a proven method.”
Usage Boundary
Choose the form that matches tense, participle role, meaning, region, or lexicalized use; do not treat the pair as freely interchangeable in every sentence.
Sources and evidence
Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.
Prove — Cambridge Dictionary↗ (opens in a new tab)Cambridge Dictionary · Prove has past tense proved; past participles proved and proven are both documented, with proven also established as an adjective.
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