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Words getting along nicely ....
Word: proficency (lookup in dictionary) (lookup stats) Dates: during 1910-1919 Sort By: most recent first (reverse)
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Normalized population density for word "proficency" throughout decades:
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Word "proficency" first appeared in our records from 173464!
See usage in 173464 »
The following words have supported "proficency" in appearing on this page. Do you know these words: