Unimpeachable Definition
ŭnĭm-pēchə-bəl
adjective
Not impeachable; that cannot be doubted, questioned, or discredited; irreproachable.
Webster's New World
Difficult or impossible to impeach.
An unimpeachable witness.
American Heritage
Beyond reproach; blameless.
Unimpeachable behavior.
American Heritage
Beyond doubt; unquestionable.
American Heritage
Not able to be impeached or reproached.
Wiktionary
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