Tolkien’s translation of the Lord’s Prayer into Sindarin, composed sometime in the 1950s, first published in the “Ae Adar Nín” article in Vinyar Tengwar #44 (VT44/21). According to Bill Welden, it is written on the back of the postcard used to write version V (the second-to-last version) of Átaremma, Tolkien’s Quenya translation of the same prayer. Tolkien omitted the last two lines of the prayer from the Sindarin translation.
Tolkien did not provide an explicit translation, so the English text is from the common English translation of this prayer among Catholics. English words with no Sindarin counterpart are in brackets. Further discussion can be found in the analysis of the individual phrases. My analysis largely follows that of Bill Welden’s “Ae Adar Nín” article (VT44/21-30), though I also consulted David Salo’s analysis of the prayer (GS/231-3).
The Sindarin word for “father”, derived from the root √AT(AR) (PM/324; VT44/21-22; VT48/19).
Conceptual Development: N. adar “father” also appeared in The Etymologies of the 1930s as a derivative of the root ᴹ√ATA of the same meaning (Ety/ATA). In the Gnomish Lexicon of the 1910s, however, G. †ador “father” was marked as archaic, and it seems {athon >>} G. nathon was the ordinary word for ”father” (GL/17, 59).