Early Quenya
oldo(s)
adverb. more
olda
adjective. more
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 “more” in the Early Qenya Grammar of the 1920s, with a variant form ᴱQ. lilda (PE14/48, 80). It had adverbial forms ᴱQ. oldo(s) or lildo(s) with short forms ol or lil. All these forms appeared in contemporaneous English-Qenya Dictionary with the translation “more” (PE15/75).