Word UsageHas accepted answer

When should I use 'about', 'on', or 'regarding' in formal vs. informal writing?

Asked byRavi AdminPosted Mar 31, 2026 1:12 PM3 answers27 upvotesCanonical URL

I'm writing an email to my professor and I'm not sure which preposition sounds best. Should I say, "I have a question about the assignment," "I have a question regarding the assignment," or "I have a question on the assignment"?

Sometimes I see these words used interchangeably, but I'm wondering if there are any rules or formal/informal differences. For example, is one of them more appropriate for academic or professional contexts? I want to make sure my email sounds polite and correct. Thanks for your help!

Context:
Academic English; formal email to a professor.

What to Know

What to KnowWhy It MattersExampleQuick Check
'Regarding' — More formal, often used in professional or academic contexts where you want a polished tone.In formal academic writing, choosing between 'about,' 'on,' and 'regarding' often depends on the level of formality and the specificity you want to convey.'Regarding' — More formal, often used in professional or academic contexts where you want a polished tone.Does "'about'" match my intended meaning and tone here?
Avoid "'about'" in literal contexts or when the intended meaning is unclear.This keeps the idiom natural and avoids overly literal wording.In literal situations, use direct wording instead of the idiom.Would this idiom sound natural to a native speaker in this exact context?

3 Answers

ByNora GrammarMar 31, 2026 1:32 PM9 upvotesAccepted answer

In formal academic writing, choosing between 'about,' 'on,' and 'regarding' often depends on the level of formality and the specificity you want to convey. Here’s a reusable pattern to guide your choice:

  • 'About' — Most general, suitable for both formal and informal messages. Can sound slightly less formal, but always clear.
    • Example: I have a question about the assignment.
  • 'Regarding' — More formal, often used in professional or academic contexts where you want a polished tone.
    • Example: I have a question regarding the assignment.
  • 'On' — Often used for lectures or topics, sometimes less natural for questions and can sound a bit awkward in certain contexts.
    • Example: I have a question on the assignment.
    • Correction: In most academic emails, 'about' or 'regarding' is preferred over 'on.'

Practice: Write two sentences to your professor: one using 'about,' the other using 'regarding.' Compare the tone. Which feels more appropriate for your situation?

Correction tip: If your sentence feels too casual, swap 'about' for 'regarding' to boost formality.

ByJin ParkMar 31, 2026 1:52 PM9 upvotes

Let's compare how 'about,' 'regarding,' and 'on' function differently in a formal academic email.

  • 'About' is common and acceptable in both informal and semi-formal writing. It is clear and direct:
    • Example: I have a question about tomorrow's assignment.
  • 'Regarding' is specifically formal. It signals professionalism and clarity:
    • Example: I have a question regarding tomorrow's assignment.
  • 'On' can sometimes be awkward in questions, especially in American English, although you'll see it with topics or subjects:
    • Example: I have a question on tomorrow's assignment. (Less natural; clearer when used as: The lecture on statistics was helpful.)

Try this: Draft two versions of your question using 'about' and 'regarding.' Read them aloud. Which sounds most professional? Cross-check by searching for email templates from your university.

Correction tip: If you're unsure, default to 'regarding' for the most formal impression in academia.

ByNora GrammarMar 31, 2026 2:12 PM9 upvotes

Each word fits differently depending on the formality of your writing and the context:

  • Use 'about' in academic or professional emails when clarity is more important than formality. It's friendly and suitable for most interactions.
    • Example: Could I ask a question about the upcoming exam?
  • Use 'regarding' when you want a more formal, business-like tone. It's ideal for initial contacts or sensitive topics.
    • Example: I have an inquiry regarding the grading criteria.
  • Use 'on' mainly for topics or presentations (e.g., 'a lecture on linguistics'), not for simple questions. In questions, 'on' can sound awkward.
    • Correction: Say I have a question about the syllabus instead of a question on the syllabus.

Practice prompt: Substitute the preposition in your question to match the tone you want. Which feels more suitable for a professor? Try writing:

  • I'd like more information [about/regarding] the reading list.

Self-edit tip: If it sounds too formal or stiff, tone down to 'about.' If it feels casual, upgrade to 'regarding.'

Want to answer this question? Log in or create an account.