Early Quenya
sutya-
verb. to sweeten, soothe
sutya
adjective. sweet
líse
adjective. sweet
naike
noun. pain
narwe
noun. pain
ongwe
noun. pain
suksa
adjective. sweet
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.