Perfect or blameless in every respect; faultless: irreproachable conduct. (adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "irreproachable" in a sentence
"It is not enough for them that their brothers or husbands should pay for the seats at the opera and accompany them there, clad in irreproachable evening dress."
"“This picture is beautiful and in a perfect state, in a word irreproachable,” read the notes from Knoedler’s."
"His conduct has, of late, been what the world calls irreproachable; but then I know his heart is still unchanged; and I know that spring is approaching, and deeply dread the consequences."