So shameful and embarrassing that it deserves criticism and causes loss of respect.
From 'disgrace' (Middle English, from Old French 'disgracier') combined with the suffix '-ful.' The word combines Latin 'dis-' (not) and 'gracia' (favor), literally meaning 'without favor or honor.'
Medieval knights had their armor publicly destroyed if they acted disgracefully in battle—it was considered worse than death because it destroyed their reputation forever. Honor and shame have always been powerful motivators in human behavior.
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