different between irreproachable vs unimpeachable

English

[1630] Borrowed from French irréprochable, from Middle French inreprochable. See also ir- +? reproachable.

irreproachable (not comparable)

impeccable, faultless, flawless, unblemished, immaculate, exemplary, model, pristine, perfect.

“irreproachable”, in The American Heritage Dictionary of the English Language, 4th edition, Boston, Mass.: Houghton Mifflin, 2000, ?ISBN
irreproachable in The Century Dictionary, New York, N.Y.: The Century Co., 1911.
“irreproachable” in Dictionary.com Unabridged, Dictionary.com, LLC, 1995–present.
irreproachable in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.

un- +? impeachable

unimpeachable (comparative more unimpeachable, superlative most unimpeachable)

Not able to be impeached or reproached.
a gentleman of unimpeachable integrity
Blameless.
Beyond doubt.
an unimpeachable alibi

Send