"Be in receipt of" is an expression used to indicate that someone has received something. It is often used in formal or legal contexts to acknowledge the receipt of documents, payments, or packages. The antonyms for this phrase can vary depending on the context, but some of the most common opposites include "be without," "be deprived of," "be empty-handed," or "lack." These words indicate that someone has not received anything or is missing out on something. In a legal sense, the opposite of "be in receipt of" could be "be in breach of" or "be in default." Regardless of the context, the antonyms for "be in receipt of" convey a sense of absence or loss.