Gnomish
tibli
noun. drizzle, sleet
dothli
noun. drizzle
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.
tibli
noun. drizzle, sleet
dothli
noun. drizzle
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 noun in the Gnomish Lexicon of the 1910s glossed “drizzle, sleet” that Tolkien said was related to ᴱQ. tiq- (GL/70) but I suspect G. tibli was actually based on the early root ᴱ√TIPI which was a dialectical variant of ᴱ√TIQI with various rain-related derivatives (QL/92).