unproven B2 Topic:Describing Qualities US /ʌnˈpruːvən/ UK /ʌnˈpruːvən/ See IPA manual Freq #39433 Meanings 1 adj not demonstrated to be true, valid, or effective The report relies on an unproven assumption about voter behavior. 2 adj not yet tested or established through experience Investors were cautious about the company's unproven technology. Thesaurus Synonyms 1 adj · not demonstrated to be... unprovedunconfirmedunsubstantiated 2 adj · not yet tested or... untestedexperimentaluncertain ↔ Opposites provenprovedestablishedverified Word family Related forms proveproofproven Etymology Formed from un- + proven, the past participle of prove. Proven entered English as a Scots legal form before becoming common as an adjective. Topics Describing Qualities External links Google Images Cambridge Dictionary Wiktionary # unproven **Type:** Word **Level:** B2 **Part of speech:** adj **IPA (US):** /ʌnˈpruːvən/ **IPA (UK):** /ʌnˈpruːvən/ **Frequency rank:** 39433 ## Meanings 1. not demonstrated to be true, valid, or effective 2. not yet tested or established through experience ## Examples - The report relies on an unproven assumption about voter behavior. - Investors were cautious about the company's unproven technology. ## Synonyms - unproved - unconfirmed - unsubstantiated - untested ## Antonyms - proven - proved - established - verified ## Related Forms - prove - proof - proven ## Etymology Formed from un- + proven, the past participle of prove. Proven entered English as a Scots legal form before becoming common as an adjective. ## Topics - Describing Qualities markdown