In the Qenya Lexicon of the 1910s there were a pair of similar nouns derived from the root ᴱ√NḶĐḶ: ᴱQ. nal (nald-) “dale, dell” and ᴱQ. nalle “dell” (QL/66). The latter was derived from ᴱ✶nḷdle and the former probably from ✱nḷd-. The word nalle also appeared unglossed in Early Qenya Word-lists from the 1920s (PE16/144).
Early Quenya
umbe
noun. dale, dell
nal
noun. dale, dell
A noun in the Qenya Lexicon of the 1910s glossed “dale, dell” derived from the root ᴱ√Ū “under” (QL/96). It may have reemerged later as ᴹQ. imbe “dell, deep vale” (EtyAC/IMBE).