Early Quenya
larúva
adjective. greasy
lisiva
adjective. greasy
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 word appearing as ᴱQ. larúva “greasy”, an adjectival form of ᴱQ. laru “fat, grease” in the Qenya Lexicon of the 1910s under the early root ᴱ√LARA (QL/51). In Early Qenya Word-lists of the 1920s Tolkien instead had ᴱQ. lisiva “greasy” as the adjectival form of ᴱQ. lise (lisy-) “grease” (PE16/141).
Neo-Quenya: The root ᴹ√LAR “fat, grease” from The Etymologies of the 1930s seems to indicate that lisy- was a transient idea, so I would retain ᴺQ. larúva “greasy” for purposes of Neo-Quenya. Note that Tolkien also had a different adjective Q. (h)lúvo “greasy, fat” in notes from the early 1950s (PE21/82), but I think the two can coexist.