Early Quenya
linta-
verb. to soothe
lintasarindea
adjective. having many willows
linta(ta)sarind(e)a
adjective. having many willows
rauka
adjective. swift
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.
A word for “having many willows” appearing in various notes from the 1910s and 20s as linta(ta)sarind(e)a (QL/53), lintasarind(e)a (PME/53) and lintatasarindea (PE14/112). It is a combination of ᴱQ. li(n)- “many” and an adjectival form of ᴱQ. tasarin “willow”. The possibly duplicated ta(ta) in this word seems to be an artifact of the prefix ᴱQ. li(n)-; compare to limpa(pa)lasse(a) “much roaring” based on ᴱQ. palasse “splashing” (QL/53).