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.

Gnomish

hilwed

adjective. adolescent

A set of similar words in the Gnomish Lexicon of the 1910s glossed “adolescent”, with variations {hildrin >>} hilwed, hithadrin and hilon, all based on the early root ᴱ√χili (GL/49). The last of these, hilon, might be a noun rather than an adjective.

hilon

adjective. adolescent


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.