Dialog vs. Dialogue
“Dialogue” is the broadly used form; Cambridge also records “dialog” as a US variant for the same conversation and formal-discussion senses.
Use “dialogue” as the broadly portable spelling; “dialog” is also documented in US English.
Key details
Choose the right form
| Meaning / situation | Form / construction | Decision |
|---|---|---|
| broad international/general prose | dialogue | Use the broadly portable spelling. |
| US English where the shorter variant is preferred | dialog | The shorter spelling is documented as a US alternative. |
| a technical product or house style mandates one spelling | follow that explicit style | Do not invent a universal computing-only meaning difference between the spellings. |
Quick tests
Meaning / construction test
Do you need the spelling that is broadly portable across English varieties?
If yes: Use “dialogue.”
If no: In US English, “dialog” is also documented; follow the audience or house style where it makes a choice.
Caveat: “Dialog” is documented as a US alternative to “dialogue.” Do not claim that the spellings inherently divide computing from non-computing senses unless a specific style guide establishes that convention.
Examples
The novel relies on natural dialogue.
“Dialogue” is the broadly portable spelling.
The US interface guide uses dialog throughout.
The shorter form is an accepted US alternative when the house style selects it.
Keep the same spelling throughout the document.
When meaning is unchanged, consistency can decide between accepted variants.
Further guidance
Core difference
Cambridge presents “dialog” as a US alternative to “dialogue” rather than as a different word.
Fast Test
Identify the intended sense first, then apply the documented regional or domain spelling for that sense.
Variant Boundary
Do not invent a technical-computing distinction unless a specific house style or domain source requires one.
Sources and evidence
Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.
- Dialogue — Cambridge Dictionary (opens in a new tab)Cambridge Dictionary · Dialogue entry documenting US also dialog for the same conversation/discussion senses