English UsageComparison guide
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
Confusion Familyregional-spelling-and-sense
Rule Familyregional-orthography
Termsdialog, dialogue
Variant Scope“Dialogue” is the broadly used form; Cambridge also records “dialog” as a US variant for the same conversation and formal-discussion senses.
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