ManyWords sources and licenses
ManyWords only uses free content that allows commercial use, and credits its authors. This is the attribution their licenses ask for.
Last updated: October 10, 2026
English definitions: Open English WordNet
Open English WordNet 2024, by the Open English WordNet community (derived from Princeton WordNet 3.0).
CC BY 4.0 license. Changes: definitions are shortened. Each word in the app keeps the identifier of its WordNet sense.
en-word.net · CC BY 4.0 license
Basis of Open English WordNet: Princeton WordNet 3.0
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
Open English WordNet is derived from Princeton WordNet 3.0, which may be used, copied, modified and distributed for any purpose and without fee, provided this notice is included. Princeton University provides it “as is”, without warranties, and its name may not be used to promote ManyWords. The full text is in the official license.
Examples and translations: Tatoeba
English sentences and their Spanish translations from the Tatoeba project, written by its contributors.
CC BY 2.0 FR license. Each word shows two Tatoeba numbers, the English sentence and its translation, with a link to each, so you can find the originals and their authors. They are also included in what you export.
tatoeba.org · CC BY 2.0 FR license
Meanings and notes
Spanish meanings and false-friend notes are written by the ManyWords team.
Word selection
To pick common words and sort them into levels we used the order of the FrequencyWords list (Hermit Dave, OpenSubtitles 2018, CC BY-SA 4.0). The list is not included in the app.
Pronunciation
It is your phone’s own voice: nothing is recorded or sent.
Open source
Made with Expo and React Native (MIT license) and other open-source libraries.