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From NASPAWiki
Revision as of 15:18, 8 January 2021 by Judycole (talk | contribs) (Current Version: 2021-01-07 - Added missing space)

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NASPA Zyzzyva is a word study and word adjudication program.

Supported Operating Systems

NASPA Zyzzyva is currently available on the Windows, macOS, and Linux operating systems.

A new “mini” version that will support tablets and smartphones, both Android and iOS, is under development. At this time, there is no date for the completion of this new version.

Current Version

Version 3.2.4 introduces the NWL2020 and NSWL2020 lexicons. It continues to include the NWL2018, NSWL2018, CSW2019, CSW2015, and Volost lexica.

Word list availability may be restricted by licensors to current NASPA members.


Michael Thelen wrote the original version of what was then Zyzzyva, and maintained it for many years as it gained worldwide popularity. Zyzzyva has been used at software self-lookup stations at most North American SCRABBLE tournaments, including BAT, Oregon TILE, the Dallas Open, the National SCRABBLE Championship, National School SCRABBLE Championship, the Canadian National SCRABBLE Championship and the World SCRABBLE Championship.

In September 2014, NASPA bought all rights to Zyzzyva, and we have worked since then with our SCRABBLE partners to ensure licensed access to all the official word lists for our members.

Ross Brown has continued development of the desktop edition of what became NASPA Zyzzyva, with Michael Donegan initially taking over development of the iOS edition. Ross Brown is now creating a common code base for all NASPA Zyzzyva platforms.

Version History

NASPA Zyzzyva 3.2.4
the official source for NWL2020, NSWL2020, NWL2018, NSWL2018, CSW2015 and CSW2019
NASPA Zyzzyva 3.2.1
the official source for NWL2018, NSWL2018, CSW2015 and CSW2019
NASPA Zyzzyva 3.2.0
the official source for NWL2018, NSWL2018 and CSW2015
NASPA Zyzzyva 3.1.0
the official source for OTCWL2016, SSWL2016 and CSW2015 as well as older versions OTCWL2014 and SSWL2015
NASPA Zyzzyva 3.0.4
the official source for OTCWL2014 and SSWL2015
NASPA Zyzzyva 3.0.3
a time-limited test release that expired in May 2015
Zyzzyva 0.9.4
released 2006-01-14, first version to include OTCWL2

Frequently Asked Questions (FAQ)

The NASPA Zyzzyva FAQ, as with everything Zyzzyva-related, was originally written by Michael Thelen and then transferred to NASPA in 2014.

NASPA will be updating this page as time permits; we welcome specific questions or suggestions at zyzzyva@scrabbleplayers.org.