expiate

"expiate" はJapan's Cultural Code Wordsの「諦めが悪い」(We Don't Know How to Quit!)の説明文に出てきた単語です。
Soon after the end of the Pacific War in August 1945, Japan's politician and business leaders began focusing on rebuilding the nation with all of the considerable skill and energy they had previously devoted to the war effort. Workers and managers were programmed to succeed. These whole country became a beehive of incessant activity. The people worked with what has been described as a "hot fury," in part to expiate the shame of having failed at war, but also to satisfy an obsession to prove that they were a superior people.
"expiate" には "ex" があるので、何かを（上記の場合は戦争に負けたこと）を捨て去る、忘れるのような意味を持っているとも推測できますが、用例も知りたいので辞書で調べます。
・Collins Dictionary: to atone for or redress (sin or wrongdoing); make amends for: I could kill myself - much more easily I could kill myself - but it seems more fitting to... expiate - is that the word?
・Merriam-Webster's Online Dictionary: to make amends for: permission to expiate their offences by their assiduous labours - Francis Bacon: Yom Kippur is the holy day on which Jews are expected to expiate sins committed during the past year.
確かにそうですよね。忘れるだけでは駄目で犯した罪は償う必要があります。