Kazan was quickly (i)by many of his contemporaries for his transgression, who saw his testimony as treachery, an act of (ii) which stained how they viewed him both as an artist and as a man. It was only by continually making films that he was able to (iii) his perceived sins and achieve some measure of atonement.
Blank (i)
rebuked
lauded
mitigated
Blank (ii)
perfidy
sophistry
redemption
Blank (iii)
exacerbate
deviate
expiate