A noun for “night” derived from primitive ᴹ✶mǭri (EtyAC/MOR), where the primitive [[ilk|[ǭ] became [ō]]].
Doriathrin
lómen
adjective. echoing
môr
noun. night
There are more words but they are from Tolkien's earlier conceptional periods. Tolkien likely changed these words as he evolved the aesthetics and completeness of the languages. You may even find languages that Tolkien later rejected. Do not mix words from different time periods unless you are familiar with the phonetic developments.
Below: Tolkien's Late Period (1950–1973). These are from Tolkien's late conceptual period — his most settled forms of the languages. Prefer these over the earlier ones above when composing new text.
A Doriathrin adjective for “echoing”, a combination of lóm “echo” and the adjective suffix -en (Ety/LAM). Its Quenya cognate lámina suggests a primitive form ✱✶lāminā, from which the [[ilk|long [ā] became [ō]]] and the -en developed due to Ilkorin a-affection, as suggested by Helge Fauskanger (AL-Doriathrin/lómen).
Conceptual Development: Tolkien first wrote lómin (EtyAC/LAM), perhaps indicating some uncertainty on the exact functioning of Ilkorin a-affection on Tolkien’s part. In the North Sindarin dialect that was in some ways the conceptual successor to Ilkorin, [[norths|final [a] did not mutate preceding vowels]].