irréprochable
irreproachable, beyond reproach
adjective ee-reh-proh-SHAB Rare
Usage Note
Irréprochable is invariable for gender — the feminine form is identical (une conduite irréprochable). It is a strong compliment, implying not just good but flawless behaviour or work. The negative prefix ir- attaches to reprochable ('blameworthy'), itself from reprocher ('to reproach').
Examples
"Sa conduite a été irréprochable."
Natural Translation
His conduct was irreproachable.

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