Life & fun · December 15, 2025
Learning a Language Using Only Words You Know
A proof-of-concept language learning app that uses LLMs to generate definitions of unknown words using only previously mastered vocabulary.
Learning a Language Using Only Words You Know launched on December 15, 2025 with 84 votes, #363 of 11,628 launches that month and more than 95% of that year's launches.
In plain words
Learning a Language Using Only Words You Know is a language learning app that uses large language models to define unfamiliar words exclusively through vocabulary a user has already mastered. Rather than encountering unknown terms explained with equally unfamiliar words, learners receive definitions built from their existing knowledge base. The app functions as a proof-of-concept, designed to help language students progress by reinforcing familiar vocabulary while encountering new content.
written from the facts on this page · September 2026
From the sources
Can you bootstrap language learning from a small set of initial words?
TL;DR: LangSeed is a proof-of-concept language learning app that defines new words using only the vocabulary you already know, with emojis bridging semantic gaps. The code is available on GitHub , and you can try it here LangSeed . I recently bought a simplified version of the Journey to the West in Mandarin. Turns out I had overestimated my reading skills, and I barely recognised 20% of the words on the first page. While I could have googled each word (or better yet, signed up for Chinese lessons) and gotten the English definition, doing so felt like it broke the immersion. Instead, I wanted to look up the words I didn't know and see their definitions in my target language. The problem is…from simedw.com
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