S. adu adj. “double” (Category: Double, Twice)
A (Sindarin?) word for “double” in the name Adurant “Double Stream” from The Silmarillion (S/123; SA/rant).
Conceptual Development: In The Etymologies of the 1930s, Adurant was Ilkorin and its initial element was Ilk. adu/ado “double”, cognate to ᴹQ. atwa of the same meaning and derived from the root ᴹ√AT(AT) “back, again” (Ety/AT(AT)).
Neo-Sindarin: For purposes of Neo-Sindarin, I would use adu only as a prefix, and would use edaid as the normal word for “double”. This prefixal use of adu- “double” would help distinguish it from ad- “re-, again”.
Reference ✧ SA/rant ✧ “double”
Element In
Cognates
Derivations
Ilk. ado (adu-) adj. “double” (Category: Double, Twice)
An adjective meaning “double” derived from the primitive root for two: ᴹ√AT (Ety/AT(AT)). The entry includes both intermediate and final forms adu and ado. Its Quenya cognate atwa indicates a primitive form *✶atwā, so this word is the clearest evidence that final [w] became [u] and final [u] became [o] in Ilkorin.
Reference ✧ Ety/AT(AT) ✧ “double”
Element In
Cognates
Derivations
Phonetic Developments
| ᴹ√AT(AT) > adu > ado | [atwa] > [adwa] > [adw] > [adu] > [ado] | ✧ Ety/AT(AT) |