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Word: observe (lookup in dictionary) (lookup stats)
Dates: during 1940-1949
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Word Time Machine

Normalized population density for word "observe" throughout decades:

1870s : 2.3028
1880s : 2.2303
1890s : 1.0063
1900s : 0.4719
1910s : 0.9710
1920s : 1.4069
1930s : 1.2156
1940s : 0.9930
1950s : 1.0367
1960s : 1.2375
1970s : 1.0467
1980s : 0.9023
1990s : 0.8025
2000s : 0.7594
2010s : 0.7930