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unimpeachable

audio pronunciation audio pronunciation
adjective
  • that cannot be doubted or questioned; trustworthy [Barron]
  • not impeachable; not to be called in question; not liable to accusation; irreproachable; blameless [Taisha]
  • that cannot be impeached; beyond doubt or question; blameless and exemplary [Nandigam]

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MSN Encarta:
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American Heritage Dictionary of the English Language:
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