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Word: impairing (lookup in dictionary) (lookup stats)
Dates: during 1879-1879
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Word Time Machine

Normalized population density for word "impairing" throughout decades:

1880s : 2.7899
1910s : 1.2397
1920s : 1.2652
1930s : 1.6557
1940s : 2.0119
1950s : 1.1169
1960s : 0.9697
1970s : 1.1219
1980s : 0.4278
1990s : 0.6771
2000s : 0.5371