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Words getting along nicely ....
Word: observation (lookup in dictionary) (lookup stats) Dates: during 1870-1879 Sort By: most recent first (reverse)
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Normalized population density for word "observation" throughout decades:
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Word "observation" first appeared in our records from 1920!
See usage in 1920 »
The following words have supported "observation" in appearing on this page. Do you know these words: