beyond doubt

Từ điển WordNet v3.1 - WordNet Dictionary

I - adjective

too obvious to be doubted
• Syn:
indubitable
• Similar to:
unquestionable
• Derivationally related forms:
indubitability (for: indubitable)

II - adverb

in a manner or to a degree that could not be doubted
- it was immediately and indubitably apparent that I had interrupted a scene of lovers
- his guilt was established beyond a shadow of a doubt
• Syn:
indubitably, beyond a doubt, beyond a shadow of a doubt
• Derived from adjective:
indubitable (for: indubitably)