A Primitive Adûnaic word glossed “crow” (SD/426). Tolkien gave two primitive forms of this word, khāw and khăw, which could just be variant forms of the same root *KHAW. A more intriguing possibility is that khāw is actually the subjective form of khăw, since this would indicate that this subjective formation dates back to the primitive stages of the language. As evidence of this, the derived plural khāwī(m) (SD/426) does resemble the Classical Adûnaic subjective plural.

Contradicting this conjecture is the fact that khaw, as an animal name, should be declined as a common-noun, using the common subjective suffix -an. Elsewhere, though, Tolkien declined some animal names as if they were neuter nouns, for example narîka as the subjective plural of #narak (SD/251). Perhaps not all animals were common nouns, or perhaps Tolkien’s ideas for the subjective tense were not fully formed when these examples were written.