advice (advise)

Advice (noun) = a recommendation. Advise (verb) = to give a recommendation. That one-letter swap changes the part of speech and causes errors like "an advice" or "Can you advice me?"

Below: a clear rule, quick memory tricks, frequent wrong/right pairs, work/school/casual examples, and short rewrite templates you can use immediately.

Quick answer

Use advice (with c) for the noun; use advise (with s) for the verb.

Advice = noun: I need advice.
Advise = verb: Please advise me.
Replacement test: if "recommendation" fits, use advice.

Core explanation: noun vs. verb (fast)

Advice is an uncountable noun meaning guidance or a recommendation (You asked for advice). Advise is a verb meaning to give guidance (I advise you to read it).

Advice never takes -s (not "advices").
Advise follows normal verb forms: advises, advised, advising.
Example (noun): I need advice about taxes.
Example (verb): I advise you to check your receipts.

Grammar notes: countability and agreement

Advice is uncountable. Use some, a piece of, or no article. Use advise when you need an action verb and conjugate it normally.

Correct: a piece of advice / some advice.
Incorrect: an advice / advices.
Correct verbs: She advises, They advised, Advising now.
Wrong: I have many advices for the meeting.
Right: I have some advice for the meeting.

Spacing and stray hyphens: mechanical errors to watch for

Formatting or OCR can split the word into parts (e.g., "ad vice" or "ad-vice"). Those are mechanical mistakes, not valid spellings.

Wrong: ad vice, ad-vice, ad vise
Right: advice, advise
Tip: search for "ad v" patterns in pasted text to catch splits.
Wrong: Please give me some ad vice on the report.
Right: Please give me some advice on the report.

Memory tricks that actually work

Two quick checks you can use every time.

advice has a c - think "counsel" (noun).
advise has an s - think "speak" or "suggest" (verb).
Replacement test: replace with "recommendation." If it fits, use advice.

Common wrong → right pairs (most frequent errors)

Short fixes that correct part of speech, countability, or verb form.

Wrong: She gave me a good advise on time management.
Right: She gave me good advice on time management.
Wrong: I would like to give you some advices.
Right: I would like to give you some advice.
Wrong: Can you advice me on this issue?
Right: Can you advise me on this issue?
Wrong: She advise me to wait for the test results.
Right: She advised me to wait for the test results.
Wrong: An advice from my mentor changed my approach.
Right: A piece of advice from my mentor changed my approach.
Wrong: I appreciate your advise on my application.
Right: I appreciate your advice on my application.

Try your own sentence

Test the whole sentence, not just the phrase. Context usually makes the correct choice clear.

Real usage: work, school, and casual examples

Short templates you can copy and adapt.

Work: Please advise whether the client approves the contract by Friday.
Work: Her advice during the budget review saved us hours.
Work: I advise moving the deadline to Monday given resource constraints.
School: The teacher advised us to focus on problem sets 4-6.
School: I asked the counselor for advice about choosing a major.
School: A piece of advice: start citations as you write, not afterward.
Casual: Thanks for the advice - I'll try that trick.
Casual: If I were you, I'd advise calling first.
Casual: Take my advice: bring a jacket; it gets cold at night.

Rewrite help: three quick fixes (work, school, casual)

Use the noun template when you mean "recommendation" and the verb template when you mean "to tell someone."

Noun template: I need some advice about [X].
Verb template: Could you advise me on [X]?
If you wrote "an advice" → change to "a piece of advice" or "some advice."

Rewrite - Work: Original: "Can you give me an advise about the contract?" → Noun: "Can you give me some advice about the contract?" or Verb: "Could you advise me about the contract?"
Rewrite - School: Original: "He advices students on thesis topics." → "He advises students on thesis topics." or "He offers advice on thesis topics."
Rewrite - Casual: Original: "I need an advice about what to wear." → "I need some advice about what to wear." or "Can you advise me on what to wear?"

Hyphenation and compound forms

Neither advice nor advise is hyphenated. Use established compounds or rephrase: "advice column" or "advice-related."

For the person who gives advice, use adviser or advisor (both acceptable).

Correct: advice column, advice-related, adviser/advisor.
Avoid forcing a hyphen into the base word: not "ad-vice."
Adviser vs advisor: both mean "one who advises"; advisor is common in US business titles.
Usage: She wrote an advice column for the magazine.

Similar mistakes to watch for

These pairs trip writers in similar ways - part-of-speech or spelling errors.

practice (noun) vs practise (verb) - British difference; US often uses practice for both.
affect (verb) vs effect (noun).
complement (adds) vs compliment (praise).
Usage: Wrong: "She gave a complement" →
Right: "She gave a compliment."

FAQ

When should I use advice vs advise?

Advice = recommendation (noun). Advise = to give a recommendation (verb). If "recommendation" fits, use advice.

Can I say "an advice" or "advices"?

No. Advice is uncountable. Say "a piece of advice" or "some advice." "Advices" is nonstandard.

How do I remember the difference quickly?

Think "c" in advice → counsel (noun); "s" in advise → speak/suggest (verb). Use the recommendation replacement test.

Is advise okay in passive voice?

Yes. Example: "You were advised to update the file." The verb conjugates normally in passive constructions.

What's the difference between adviser and advisor?

Both mean "one who advises." Adviser is common in British use; advisor often appears in US business titles. Neither is the same as advice.

Quick check before you send

Run the three-step rewrite above, scan for "an advice", "advices", or stray spaces/hyphens, and test the sentence with the replacement test. For extra confidence, paste the sentence into a grammar checker to catch countability and verb-form slips.