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.
halda
adjective. veiled, hidden, shadowed, shady
halda
adjective. tall
halla
adjective. tall, high
tunda
adjective. tall
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 in The Etymologies of the 1930s glossed “veiled, hidden, shadowed, shady” derived from the primitive ᴹ✶skalnā based on the root ᴹ√SKAL “screen, hide (from light), overshadow” (Ety/SKAL¹). A similar form halda “hidden, veiled” appeared in the entry for a deleted root ᴹ√SKAL³ “cover, hide” (EtyAC/SKAL³), probably abandoned when Tolkien adjusted the meanings of the roots ᴹ√SKAL and ᴹ√SKEL; see those entries for details. This word might be consider an adjectival form of hala “cast shadow” from 1966-67 (PE17/154).