Please note all these words are available in the English-Sindarin dictionary, see download link on the home page
Sindarin is an incomplete language - there are many gaps in its vocabulary, some of which I have been slowly filling over time. These words are either based on: Existing rules (such as adding the suffixes -weg or -ui to existing words, or negating an existing word), A Quenya word with the same meaning (whose spelling has been altered to make it more Sindarin), or creating a compound word from already existing Sindarin words.
As my lists have been steadily growing lately, I have decided to put links to two word documents rather than bloating the page here. These lists also include attested words by Tolkien, found in PE17, and the reconstructed words by two other scholars, found here and here.