No in Morse Code — Pattern, Sound & Lookalike Words
No in Morse code is -. --- — one dash and one dot for N, three dashes for O. Two letters, five signals, and one of the fastest complete words you can send. Try it below.
No in Morse Code — Try It
−· −−−
NO
Two Letters, Five Signals
N
− ·
dah-dit
O
− − −
dah-dah-dah
Both letters lean heavily on dashes, which is why "No" has such a bold, unmistakable rhythm compared to a dot-heavy word like Hi. A short letter-gap sits between the N and the O — skip it, and the two letters blur into something else entirely.
No vs. Yes in Morse Code
No
− · − − −
Two letters, five signals, almost entirely dashes — quick to send and hard to mistake for a "maybe."
Yes
− · − − · · · ·
Three letters and noticeably more signals, ending in a fast run of dots that feels almost like the opposite rhythm of "No."
Because the two patterns don't share a single overlapping letter, there's very little chance of mixing them up once you know both — unlike some of the lookalike words below, which are worth being extra careful with. See the full Yes in Morse code breakdown for the letter-by-letter pattern.
Words That Are Easy to Send by Mistake
| Word | Pattern | How It's Confused With No |
|---|---|---|
| GO | − − · − − − | Only the first letter differs — G adds an extra dash before N's shape. |
| TO | − − − − | Drop the dot from N and you're left with T, turning "No" into "To." |
| ON | − − − − · | Simply reversing the letter order flips "No" into "On." |
| C | − · − · | Skip the letter-gap entirely and dash-dot-dash-dash reads as a single letter, C. |
Every one of these mix-ups comes down to the same two things: letter order and spacing. Get those right and "No" stays unmistakable.
Where a Fast "No" Actually Matters
Answering a yes/no question
A search-and-rescue light or radio operator often only needs a single-word answer — "No" is one of the quickest, clearest replies Morse can offer.
Flashing a light at distance
The heavy dash-dash-dash of O carries well over long distances, making "No" easy to read even from a plane or boat far away.
Radio check-ins
Amateur operators use short confirmation words like "No" and "Yes" constantly, without needing to spell out a full sentence each time.
Practice and training
Because it mixes a two-signal letter with a three-signal letter, "No" is a common early word for testing whether a beginner can keep dot and dash timing distinct.
Frequently Asked Questions
What is No in Morse code?
-. --- — a dash-dot for N, three dashes for O, five signals in total.
How does No compare to Yes?
Yes is -.-- . ... — three letters instead of two, with no overlapping structure with No.
What words look like No?
GO, TO, and ON are the closest lookalikes, along with the letter C if the letter-gap is dropped.
Is No a special signal like SOS?
No — it's an ordinary word spelled letter by letter, not a fixed distress prosign.
Can No be sent with a flashlight?
Yes — a long-short flash for N, a pause, then three long flashes for O.
Is No a good word for beginners?
Yes — mixing a two-signal letter with a three-signal letter makes it a solid early timing test.