M in Morse Code
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Two dashes, no dots at all. Only T's single dash is a shorter all-dash letter, and M's brevity on the page is misleading: dashes run roughly three times as long as dots, so a two-symbol code built entirely from them takes longer to send than several four-symbol codes that mix the two.
Related Letters
- I (two dots) is M's exact opposite — same symbol count, opposite duration.
- O (three dashes) is M with one more dash added, the most likely real mishearing under a weak signal.
- T (one dash) is M's dash repeated only once instead of twice.
Because M is only two symbols long but both of them are dashes, it takes longer to send than its short symbol count might suggest — a useful reminder that letter length and transmission time aren't quite the same thing in Morse code.
Frequently Asked Questions
Does M's short symbol count mean it's quick to send?
Not as quick as its length suggests — both symbols are full dashes, so M actually takes longer to key than several three-symbol letters that lean mostly on dots.
What letter is the exact opposite of M?
I, which is two dots — the same symbol count as M but built entirely from short signals instead of long ones.