Beware, older languages below! The languages below were invented during Tolkien's earlier period and should be used with caution. Remember to never, ever mix words from different languages!

Gnomish

malthos

noun. butter cup

A noun appearing as G. malthos “buttercup” in the Gnomish Lexicon of the 1910s, an elaboration of G. maltha “golden yellow” (GL/56).

Neo-Sindarin: I would retain this word as ᴺS. malthos for purposes of Neo-Sindarin as an elaboration of S. malt “gold”.