English UsageComparison guide
Finalize vs. Finalise
“Finalize” and “finalise” are regional spelling variants of the same verb. Cambridge uses “finalize” as the entry form and notes that UK English usually uses “finalise”; the difference is spelling convention, not meaning.
Both spellings are valid. Use “finalize” in US-oriented writing; Cambridge notes that UK English usually uses “finalise.”
Key details
Confusion Familyregional-variant
Termsfinalize, finalise
Variant Scopesame verb; Cambridge marks UK usually finalise
Further guidance
Core difference
Both forms mean to make something final or settle its remaining details.
Style Boundary
Choose the form required by your regional or house style and use it consistently across the document.
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.
- finalize — Cambridge Dictionary (opens in a new tab)Cambridge Dictionary · Regional spelling evidence: finalize, with UK usually finalise