Definition of unimpeachable
- unimpeachable evidence
- an unimpeachable source
- an unimpeachable reputation
a person of unimpeachable integrity
The information is from an unimpeachable source.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'unimpeachable.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
: very reliable and trusted : not able to be doubted or questioned
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