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.
ú
preposition. beneath
ú-
prefix. un-
nún
adverb. beneath
enqe
preposition. without
falka
adjective. bad
fingwa
adjective. narrow
An adjective for “narrow” in the Qenya Lexicon of the 1910s under the early root ᴱ√FIŊI (QL/38).
numenda
adjective. western
qarda
adjective. bad
úv-
prefix. un-
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 word in the Qenya Lexicon of the 1910s glossed “beneath” under the early root ᴱ√Ū “under”, a variant of ᴱ√NŪ (QL/96). In the contemporaneous Gnomish Lexicon, Tolkien equated ᴱQ. ū to G. uf “out of, forth, from” (GL/74).