Tolkien’s grammatical description of Adûnaic stopped short of a discussion of verbs. All we have are a few of short notes described by Christopher Tolkien (SD/439) and the examples from the Lament of Akallabêth and other isolated sentences. Since the evidence is fragmentary and unclear, any reconstruction of the Adûnaic verb system is necessarily speculative. There isn’t much agreement among the authors who have examined the evidence. The entries here are simply my own best guesses on Adûnaic verbal syntax.