Gnomish
glin
noun. sound, voice, utterance
-glin
suffix. suffix in the name of languages
cli Reconstructed
adjective. ?attractive
-drin
suffix. suffix in the name of languages
-grin
suffix. suffix in the name of languages
lir-
verb. to sing
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.