OTCWL1

The first edition of the Official Tournament and Club Word List (OTCWL1, also known as OTCWL, OWL1, OWL, TWL1 or TWL) was the official word reference for words of up to nine letters and their inflections from 1998–03–01 to 2006–02–28. The corresponding reference for longer words was initially MWCD10, later the Long List.

It was the first official reference to omit definitions, to include base words of nine letters, and to be available exclusively to association members.

OTCWL1 was edited by Merriam-Webster based on research by the NSA Dictionary Committee under the chairmanship of John Chew.

Errata

The word ANTEFIXAE was incorrectly omitted from the printed edition of OTCWL1.