# Credits & word-list licenses

**Useless Word of the Day / La Palabra Inútil del Día** by Totally Useless Games by DeadWing7.

The game code, styling, the inline SVG icon and all UI text are original works of Totally Useless Games by DeadWing7. The game loads no external fonts, libraries or CDNs.

## Word lists at a glance

| File | Contents | License |
|---|---|---|
| `js/answers-en.js` | English daily answers (schedule order) and the practice pool | **CC BY-SA 4.0**; words from SCOWL (notice below) |
| `js/valid-en.js` | English valid guesses | SCOWL notice (permissive) |
| `js/answers-es.js` | Spanish daily answers (schedule order) and the practice pool | **CC BY-SA 4.0** for the selection; the words come from RLA-ES, so the **MPL 1.1** notice is also kept |
| `js/valid-es.js` | Spanish valid guesses | **MPL 1.1** (RLA-ES) |

Each file starts with its own license header.

## Sources

### FrequencyWords (both languages, used to choose the answers)
Answer selection uses word-frequency data from *FrequencyWords* by Hermit Dave (https://github.com/hermitdave/FrequencyWords), licensed CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/). Our answer lists are a filtered selection derived from that data.
- Changes made: we kept only 5-letter words that are also in the dictionaries below; ranked them by frequency; removed plurals, verb forms, proper nouns, slurs, profanity and words unsuitable for a family game (with a manual review); swapped some words by hand; and shuffled the daily order with a fixed seed. No frequency counts or ranks are shipped.
- Both answer lists (`js/answers-en.js`, `js/answers-es.js`), including the practice pools, are therefore released under **CC BY-SA 4.0** (full text: `licenses/CC-BY-SA-4.0.txt`). This applies only to the word-list data, not to the game code, art or text.

### English: SCOWL
- **SCOWL (Spell Checker Oriented Word Lists), 2020.12.07**, by Kevin Atkinson, http://wordlist.aspell.net/
  - Valid guesses come from SCOWL sizes 10–80, English and American. Answers come from sizes 10–35.
  - Copyright 2000-2018 by Kevin Atkinson, plus the other copyright holders listed in `licenses/SCOWL-Copyright.txt`.
  - Permission notice: "Permission to use, copy, modify, distribute and sell these word lists, the associated scripts, the output created from the scripts, and its documentation for any purpose is hereby granted without fee, provided that the above copyright notice appears in all copies and that both that copyright notice and this permission notice appear in supporting documentation. Kevin Atkinson makes no representations about the suitability of this array for any purpose. It is provided "as is" without express or implied warranty."

### Spanish: RLA-ES dictionaries
- **RLA-ES Spanish spelling dictionaries** (es_ES plus the regional MX, AR, CO, CL, VE and PE dictionaries), by Santiago Bosio and contributors, https://github.com/sbosio/rla-es, distributed via https://github.com/LibreOffice/dictionaries/tree/master/es
  - Valid guesses: every word form, expanded with hunspell `unmunch`, from es_ES and the six regional dictionaries, plus a few common Latin American words (chile, tamal, arepa, palta, cuate, chido, chela, chava, bacán, órale, pibes and similar).
  - Answers and practice words: dictionary base entries (nouns, adjectives, infinitives).
  - License: the dictionaries are triple-licensed (GPL 3+, LGPL 3+ or MPL 1.1+). We use them under the **Mozilla Public License 1.1**.
  - MPL notice: *The contents of `js/valid-es.js` and the words in `js/answers-es.js` are subject to the Mozilla Public License Version 1.1 (the "License"); you may not use these files except in compliance with the License. You may obtain a copy of the License at https://www.mozilla.org/MPL/1.1/ (also `licenses/MPL-1.1.txt`). Software distributed under the License is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the specific language governing rights and limitations under the License. The Original Code is the RLA-ES Spanish dictionary; the Initial Developer is Santiago Bosio and contributors.*
  - The files are plain, readable JavaScript, so each file is its own source form.

### Filtering only (nothing shipped)
- **List of Dirty, Naughty, Obscene, and Otherwise Bad Words** (en, es), https://github.com/LDNOOBW/List-of-Dirty-Naughty-Obscene-and-Otherwise-Bad-Words, CC BY 4.0. Used only as a blocklist.
- A build-time slur blocklist (Totally Useless Games) removes slurs from every list, valid guesses included.

## License texts in this folder
- `licenses/CC-BY-SA-4.0.txt`
- `licenses/MPL-1.1.txt`
- `licenses/SCOWL-Copyright.txt`