Not tried and tested (8)
I believe the answer is:
unproven
(Other definitions for unproven that I've seen before include "Not demonstrated as true or factual" , "flat bread?" , "Verdict" , "Not established as fact" .)
I believe the answer is:
unproven
(Other definitions for unproven that I've seen before include "Not demonstrated as true or factual" , "flat bread?" , "Verdict" , "Not established as fact" .)