“goo dictionary” is a free dictionary service launched in 1999 by goo, a portal site operated by NTT DoCoMo.

The service offered Japanese language dictionaries, English-Japanese and Japanese-English dictionaries, thesaurus dictionaries, four-character idioms, kanji dictionaries, and terminology dictionaries from Shogakukan, Sanseido, Gakken, and other language dictionaries and terminology collections.

Goo announced this service will end by 25th June, after 26 years.