unproven

/ˌʌnˈpruːvən/
adjective
  1. Not yet demonstrated to be effective, reliable, or true through experience or testing.
    • The young lawyer was seen as talented but unproven in high-stakes cases.
    • Investors are cautious about putting money into unproven technology.
    • Many alternative treatments remain unproven by modern medical standards.
Antonyms
What does "unproven" mean? | whatsthatwordmean | whatsthatwordmean