Slash Punctuation
A slash has legitimate uses in established expressions, paths, and URLs, but style guides caution against using it as a vague substitute for “or” in ordinary prose. A slash can mean different relationships in different contexts, so do not assume readers will infer whether it means “or,” “and,” “per,” or a structural separator.
A slash has legitimate uses in established expressions, paths, and URLs, but style guides caution against using it as a vague substitute for “or” in ordinary prose.
Key details
Important caveats
Scope Boundary
A slash can mean different relationships in different contexts, so do not assume readers will infer whether it means “or,” “and,” “per,” or a structural separator.
Further guidance
Application
Keep slashes where the convention itself requires them; otherwise spell out the relationship when “and,” “or,” or a fuller phrase would be clearer.
Core Rule
A slash has legitimate uses in established expressions, paths, and URLs, but style guides caution against using it as a vague substitute for “or” in ordinary prose.
Practical Application
Use a slash for established compact relationships, paths, URLs, or forms where the medium/style permits it; replace it with a word when the slash would leave the relationship ambiguous.
Reader Check
Could a reader tell whether the slash means “or,” “and,” “per,” a path separator, or something else without guessing?
Worked Example
Ambiguous: “manager/employee responsibilities.” Clearer when the intended relation is alternatives: “manager or employee responsibilities.” Preserve literal URLs and file paths as written.
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.
- Slashes — Microsoft Writing Style Guide (opens in a new tab)Microsoft Learn · Writing and technical-use distinctions for slash and backslash
- Chicago guidance on slash constructions (opens in a new tab)The Chicago Manual of Style · Slash structure and spacing