The term signifies a feeling of disappointment resulting from the discovery that something is not as good as one believed it to be. It often involves the loss of faith in a previously held ideal, person, or institution. In a historical context, it indicates a sense of profound disappointment experienced by a society or group of individuals after events reveal the falseness of previously cherished beliefs or expectations. A prominent example is the widespread feeling following World War I, where the scale of destruction and loss of life shattered pre-war notions of progress and national glory.
Understanding the concept is crucial for analyzing various periods in world history. It helps to explain social unrest, political upheaval, and shifts in cultural values. When people become disillusioned, they are more likely to question authority, embrace new ideologies, or demand reform. Examining instances of widespread feelings of disappointment allows historians to better comprehend the underlying causes of major historical transformations and the emergence of new social movements.