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.

Doriathrin

caun

adjective. bowed, bow-shaped, bent

An adjective meaning “bowed, bow-shaped, bent” developed from the primitive form ᴹ✶kuʒnā (Ety/KUƷ). The middle diphthong went through various sound changes as indicated in The Etymologies. First the [[ilk|[u] became [o] preceding the final [a]]] (kogna), then the [[ilk|[g] (from ✶ʒ) vocalized to [u] before the [n]]] (coun) and finally the diphthong [[ilk|[ou] became [au]]] (caun).

Doriathrin [Ety/KUƷ] Group: Eldamo. Published by

losgen Reconstructed

adjective. empty

An adjective meaning “empty” attested only as an element in the Ilkorin name Mablosgen (Ety/MAP). As suggested by Helge Fauskanger, it might be a combination of Dor. lost and the adjective suffix -en, but if so it is unclear where the medial g came from (AL-Ilkorin/Mablosgen). Alternately, perhaps losgen is the general Ilkorin adjective for “empty” and lost is a variant used only in the Doriathrin dialect.

Doriathrin [Ety/MAP] Group: Eldamo. Published by

lost Reconstructed

adjective. empty

A Doriathrin adjective meaning “empty” attested only as an element in the name Dor. Mablost (Ety/KAB). Its Quenya cognate lusta suggests a primitive form ✱✶lustā, with the [o] developing from Ilkorin a-affection. It might be a Doriathrin-only variant of more general Ilkorin losgen “empty”.

Doriathrin [Ety/KAB] Group: Eldamo. Published by

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.