American Heritage Dictionary
(2)
Century Dictionary
(3)
GNU Webster's 1913
(3)
WordNet
(2)
Elsewhere on the web
Prolific has been looked up 695 times, favorited 0 times, listed 50 times, and commented on 6 times.

American Heritage Dictionary (1)
Century Dictionary (1)
Bubble size: how much this word was used in a year
Bubble height: used more or less than expected, vs. all uses evenly distributed
You can expect to see this word about once a week.
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