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!
A noun appearing as ᴱQ. aiqasse “precipice” in the Qenya Lexicon of the 1910s, a noun formation from ᴱQ. aiqa “steep” appearing nearby (QL/29). Since ᴹQ. aiqa “steep” continued to appear in Tolkien’s later writings (Ety/AYAK), perhaps this word can be salvaged for Neo-Quenya writing as ᴺQ. aiquassë.