Qenya
helda
adjective. naked, stripped bare
helda
adjective. friendly, having love (for)
halla
adjective. naked
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.
An adjective for “naked” in The Etymologies of the 1930s derived from primitive ᴹ✶skelnā under the root ᴹ√SKEL (Ety/SKEL). In the entry for ᴹ√SKAL “screen, hide”, helda was glossed “stripped bare” and contrasted with ᴹQ. halda “veiled, hidden” (Ety/SKAL¹). This comparison is probably because Tolkien originally had ᴹQ. halla “naked” from the root ᴹ√SKAL, but this entry and its derivatives were deleted (EtyAC/SKEL).
Neo-Quenya: For purposes of Neo-Quenya, I would use the word helda “naked” in the sense of “✱without clothes”, as opposed to parnë for “naturally bare or bald”. I would also use helda in the sense “✱denuded”, in references to regions with plant growth removed.
Conceptual Development: There are a couple earlier “naked” words beginning with h- in the Qenya Lexicon of the 1910s: ᴱQ. hulin and ᴱQ. hulqa “naked” under the early root ᴱ√HULU “strip” (QL/41). Given the gloss “stripped bare” for helda in the 1930s, these 1910s words might be its precursors.