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

glith

noun. dale, hillslope

A noun in the Gnomish Lexicon of the 1910s glossed “dale, hillslope” derived from ᴱ√nḷđ (GL/40). Its plural was glidhin, indicating a stem form of glidh-. The ancient initial *nḷ-* developed into *nli-* as often happened with favored clusters like nl-, which eventually developed into *dl-* and then *gl-*. Meanwhile, the final *-dh* became *-th*, though the dh was preserved in the plural form as noted above.