IPA: //ˈtɛlɪɡræfɪst//
KK: /tɛˈlɛɡrəfɪst/
A person who sends and receives messages using a telegraph, a device that transmits messages over long distances using electrical signals.
The telegraphist quickly decoded the incoming messages during the emergency.
Telegraphist → It is formed from "tele-" (from Greek "tēle", meaning far or at a distance) and "graph" (from Greek "grapho", meaning to write). The suffix "-ist" (meaning one who practices or is concerned with) indicates a person who writes or communicates over long distances, specifically through telegraphy.
Think of 'far' ('tele-') and 'writing' ('graph') to remember that a telegraphist is someone who communicates by writing messages over long distances.