Thesaurus Day

The Emotion Thesaurus: A Writer' Guide To Character Expression, by Angela Ackerman - Amazon.com

The Emotion Thesaurus: A Writer’ Guide To Character Expression, by Angela Ackerman – Amazon.com

Thesaurus Day is celebrated on January 18th of each year.  The staff at National Whatever Day were unable to discover the origin of Thesaurus Day, however we believe it was established in celebration of the thesaurus.

A thesaurus is a reference work that lists words grouped together according to similarity of meaning (containing synonyms and sometimes antonyms), in contrast to a dictionary, which contains definitions and pronunciations. The largest thesaurus in the world is the Historical Thesaurus of the Oxford English Dictionary, which contains more than 920,000 words.