A Primitive Adûnaic form attested as u “he” (SD/435), but given the later Adûnaic pronoun Ad. u or hu “he”, the actual primitive pronoun may have been *ƷU [ɣu], *ʔU or *HU [xu], as Tolkien indicated in a footnote (SD/433, note #7). The suffix -u was also a common feature of Classical Adûnaic masculine-nouns.