The word Khuzdul (also spelled Khuzdûl in late manuscripts) is composed of the stem KH-Z-D, and the adjectival ending -ul, which has the meaning similar to "-ish" or "-ian".[source?]
Khuzdûl
khuzd
noun. Dwarf
khuzdul
noun. Dwarvish
Khuzd
Khuzd
Khuzdul
Khuzdul
The word comes from the Root Kh-Z-D; it is also visible in the words Khuzdul and perhaps Nulukkhizdîn.