The phrase "without reply" can be replaced by several synonyms that convey the lack of response or answer to an inquiry. Using terms like unanswered, unacknowledged, and ignored can help express the frustration of being left without a reply. Similarly, the word "unresponsive" captures the idea that someone is not reacting or responding to stimuli. Other options include "mute," "silent," and "speechless," which all refer to the absence of words or sound in response to a question or statement. In short, there are many alternatives to "without reply" that can help to effectively convey the message of being ignored or unheard.