Early Quenya
pinilya
adjective. small
pinilya wilwarindon
small like a butterfly
minwa
adjective. small
pínea
adjective. small
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.
The second phrase of the first version of the Oilima Markirya poem (MC/220). The first word is the adjective pinilya “small”, followed by the adverbial form wilwarindon of wilwarin “butterfly”, hence: “like a butterfly”.
Decomposition: Broken into its constituent elements, this phrase would be:
> pinilya wilwarin-don = “✱small butterfly-like”
Conceptual Development: The reference to a butterfly did not appear until the fourth draft of the poem (OM1d: PE16/62); earlier drafts used the unrelated phrase lutsilya lúne veasse “✱sailing on a blue sea” (OM1a-c: PE16/56-7, 60). In the first appearance of this phrase, Tolkien retained the adjective lutsilya “sailing” (active-participle of the verb lutu-) as a descriptor for the butterfly. He changed it to the adjective pinilya in the sixth draft (OM1f: PE16/74, 76).