When it comes to expressing an action that is performed through telegraph, there are a number of synonyms that one could use. The most common synonyms for "by telegraph" include "via telegraph," "using telegraphy," and "through telegraph lines." Additionally, one could also use the phrase "by wire," or abbreviate it to "by tele" or "by T." These synonyms may be used in a variety of contexts, whether discussing historical events, modern communication methods, or even fictional plotlines. Regardless of the specific usage, these synonyms provide a useful way to expand one's vocabulary and communicate with precision.