Look up words in the 30 baseword lists (and 4 supplementary lists) to find all associated family members. Each list contains 1000 word families.

Select a corpus to reference frequency information. WFF is a custom 10 m word corpus comprised of around 80% spoken language and 20% written language created by I.S.P. Nation. The BNC 1994 is the 100 m word British National Corpus of 1994.