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Words getting along nicely ....
Word: profficiency (lookup in dictionary) (lookup stats) Dates: during 1950-1959 Sort By: most recent first (reverse)
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Normalized population density for word "profficiency" throughout decades:
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Word "profficiency" first appeared in our records from 173275!
See usage in 173275 »
The following words have supported "profficiency" in appearing on this page. Do you know these words: