Antonyms for the phrase "are in receipt of" includes phrases such as "are not in possession of," "have not received," and "not in receipt of." These antonyms express the opposite of receiving or possessing something. For instance, "not in receipt of" indicates that the receiver did not receive or possess the item, while "have not received" implies that the receiver did not acquire something they were expecting. The use of these antonyms might apply in sentences that require negations, such as "We are not in possession of the payment" or "They have not received the package yet.