un ‧ pro ‧ ven /ʌnˈpruːv ə n, -ˈprəʊ- $ -ˈpruː-/ BrE AmE adjective
[ Word Family: verb : ↑ prove ≠ ↑ disprove ; noun : ↑ proof ; adjective : ↑ proven ≠ ↑ unproven ]
not proved or tested:
unproven allegations
unproven medical treatments
un ‧ pro ‧ ven /ʌnˈpruːv ə n, -ˈprəʊ- $ -ˈpruː-/ BrE AmE adjective
[ Word Family: verb : ↑ prove ≠ ↑ disprove ; noun : ↑ proof ; adjective : ↑ proven ≠ ↑ unproven ]
not proved or tested:
unproven allegations
unproven medical treatments
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012