Conjunctions in Adûnaic work identical as in English, acting as hooking up words, phrases and clauses. Only one original conjunction has been conjectured from Tolkien’s works, the derived conjunctive prefix ka- (“and”). Otherwise, Adûnaic has shown that it may use the dual suffix -at (“two (of), pair, dual”) for connecting individual words.
Phrases.
If a connection must be clearly established between phrases or clauses, use the conjunction ka- (“and”) in the same manner as its English counterpart. If no connection is clearly needed, do not use it, even if English does utilize a conjunction in such places.
Examples:
Balîka adûnada, kayanakkham sakalad ananadûnê.
“The ships went west, and they came to the shore of Númenor.”
*Kadô Zigûrun zabathân unakkha.
“And so Sauron, humbled, he came.”
Words.
When connecting two words, compound the two words together and add the dual suffix at- (“two, dual, pair (of)”) at the end. Alternatively (especially with three or more connected words), the conjunctive prefix ka- (“and”) may be used.