Echo — NATO Phonetic Alphabet for E

E's NATO phonetic alphabet word is Echo — one of the plainer entries on the list, needing no pronunciation notes or spelling caveats the way some of its neighbors do.

On a ship's mast, the Echo signal flag by itself tells nearby vessels "I am altering course to starboard" — the mirror opposite of India's flag, which signals a course change to port. It's a small but neat piece of the maritime flag system's internal logic: paired directional signals sitting a few letters apart in the alphabet rather than next to each other.

• In Morse code, E is the shortest possible signal in the entire system: a single dot.
• The word Echo itself is widely recognizable across languages, since acoustic echoes are a universal physical phenomenon rather than a culturally specific reference.
• "Echo" has also become a familiar tech-industry word well outside radio use, from the Unix and Windows command-line "echo" command to Amazon's Echo line of smart speakers — both unrelated to the phonetic alphabet, but part of why the word feels so instantly recognizable today.