The antonyms for the phrase "sending word" could be phrases like silence, not communicating, keeping quiet, or keeping to oneself. In some cases, the term "sending word" may also be contrasted with "receiving word," which suggests an exchange of information or communication between two or more parties. Additionally, the opposite of "sending word" could also refer to phrases such as withholding information, failing to inform someone or neglecting to pass on important news. Ultimately, the antonyms for "sending word" reflect the many different ways that people can communicate - or choose not to communicate - with one another.