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CloseReview for OneLook (all dictionaries) by Desert Tortoise
Rated 5 out of 5 stars
I've been using this for at least a couple of years and love it! It seems to find a definition for even very obscure words, long out of use words, and words very specific to limited population, isolated to a small sub-subsection of industry or profession. After getting the serious definition I want, it can be... amusing to check out the definition offered in the Urban Dictionary and all in a single click.
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