Preposition Stranding
English can leave a preposition at the end of a clause, especially in ordinary and informal structures; more formal alternatives sometimes move the preposition before a relative or interrogative pronoun. A sentence-final preposition is not automatically a grammar error. Register, construction, and clarity determine whether fronting is preferable.
English can leave a preposition at the end of a clause, especially in ordinary and informal structures; more formal alternatives sometimes move the preposition before a relative or interrogative pronoun.
Key details
Important caveats
Scope Boundary
A sentence-final preposition is not automatically a grammar error. Register, construction, and clarity determine whether fronting is preferable.
Further guidance
Application
Choose the natural stranded form for ordinary prose when it is clear, or use preposition fronting where a formal register genuinely calls for it.
Core Rule
English can leave a preposition at the end of a clause, especially in ordinary and informal structures; more formal alternatives sometimes move the preposition before a relative or interrogative pronoun.
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.
- Prepositions: position and stranding — Cambridge Grammar (opens in a new tab)Cambridge University Press · Direct grammar guidance distinguishing common preposition stranding from more formal preposition-fronting alternatives.