bêth

noun. expression, saying, word

A noun translated as “expression, saying, word” (SD/427). It is likely derived from the Primitive Adûnaic root √BITH “say” (SD/416). This word is very similar to Sindarin peth “word”, especially in the Sindarin lenited form beth. The ancient development of the Adûnaic word may have been similar to Sindarin, with Primitive Elvish root ᴹ√KWET > ✱√PET > ✶Ad. √BITH, as suggested by Helge Fauskanger (AL/Adûnaic).

izindu-bêth

noun. true-sayer, prophet

A noun for “prophet”, more literally “true-sayer”, given by Tolkien as an example of the objective case combined with a verb stem in an agental-formation (SD/427).