Writers often mix up everyday (one word, adjective) and every day (two words, adverbial phrase meaning "each day"). Adding an article before every day ("an every day") usually produces a grammatical mismatch.
Below are clear rules, quick tests, memory tricks, many wrong/right pairs, and simple rewrites you can copy into work, school, or casual writing.
Quick answer
Use everyday (one word) to describe a noun (ordinary, routine). Use every day (two words) to mean "each day." Avoid "an every day"; use "an everyday" + noun or restructure the sentence.
- everyday (adj) = ordinary, routine: my everyday shoes
- every day (adv) = each day (frequency): I walk every day
- Swap test: replace every day with each day - if it works, use two words
Core explanation: adjective vs. adverbial phrase
everyday (one word) is an adjective that modifies nouns: everyday tasks, everyday clothes. every day (two words) is the adverbial phrase every + day that indicates frequency: She trains every day.
Quick check: if the phrase answers "what kind of?" use everyday. If it answers "how often?" use every day.
- Adjective → everyday + noun: an everyday backpack, everyday problems
- Adverb (frequency) → verb + every day: He writes every day, They meet every day
Spacing and article traps: why "an every day" is wrong
An article (a/an/the) introduces a noun phrase. every day is not a noun, so "an every day" mismatches parts of speech. Writers type "an every day" when they mean either an everyday + noun or every day (frequency) without an article.
- Mistake pattern: article + every day → usually wrong
- Fix patterns: a/an + everyday + noun OR verb + every day (no article)
- Wrong: She had an every day ritual.
- Right: She had an everyday ritual. / She performed the ritual every day.
Hyphenation: is every-day ever correct?
every-day (hyphenated) is not standard in modern prose. Use everyday (one word) for adjectives. Only follow a house style that explicitly requires a hyphen.
- Prefer everyday (one word) for modifiers before nouns.
- Do not use every-day unless a style guide demands it.
- Wrong: We need every-day supplies.
- Right: We need everyday supplies.
Grammar notes: articles, determiners, and position
Articles pair with nouns. If an article directly precedes every/"every day," check whether a noun follows. If not, you probably need everyday + noun or to place every day after the verb.
- Bad: an + every day + (no noun following) → mismatch
- Good: a/an + everyday + noun OR verb + every day
- Wrong: He committed an every day mistake.
- Right: He made an everyday mistake. / He made the same mistake every day.
Memory trick: quick checks to use while editing
Three fast checks:
- Swap test - replace every day with each day. If it fits, use two words.
- Adjective check - does it answer "what kind of?" If yes, use everyday.
- Article check - if you see "an every" or "a every," change it: use everyday + noun or restructure.
- Test: "She trains every day" → "She trains each day" (works) → use two words.
- Test: "What kind of shoes?" → "everyday shoes" (one word).
Try your own sentence
Test the whole sentence in context. If the choice still feels awkward, substitute daily, each day, or rephrase to preserve rhythm and clarity.
Examples: wrong/right pairs and context-specific usages
Copy the rewrite that matches your intended meaning. Each wrong sentence is followed by one or two correct options.
- Wrong: This is an every day occurrence.
- Right: This is an everyday occurrence. / This occurs every day.
- Casual - Wrong: She bought an every day coffee.
- Casual - Right: She bought her everyday coffee. / She buys coffee every day.
- Work - Wrong: We hold an every day meeting.
- Work - Right: We hold a meeting every day. / We have an everyday stand-up meeting.
- School - Wrong: Turn in an every day homework.
- School - Right: Turn in your homework every day. / Submit your everyday homework items in class.
- Work - Wrong: He uses an every day tool for calculations.
- Work - Right: He uses an everyday tool for calculations. / He runs calculations every day.
- Casual - Wrong: She had an every day commute of two hours.
- Casual - Right: She had an everyday two-hour commute. / She commuted two hours every day.
- Work examples
- Run the build every day before the demo.
- Track everyday expenses separately in the spreadsheet.
- Daily backups (or "backups run every day") are required.
- School examples
- Practice the spelling list every day.
- Everyday items (pens, calculators) are allowed in class.
- Teachers give warm-ups every day.
- Casual examples
- I walk my dog every day.
- These are my everyday sneakers.
- Everyday life can be chaotic with a newborn.
Rewrite help: step-by-step fixes with multiple rewrite options
Editing workflow:
- Decide: is the phrase describing a noun (adjective) or indicating frequency (adverb)?
- Apply the swap test: replace every day with each day.
- If an article precedes, try everyday + noun or move the phrase after the verb.
- If still unclear, use daily, each day, or every single day as an unambiguous alternative.
- Rule: When you see "an every," convert to "an everyday" + noun or rewrite to put every day after the verb.
- Rewrite examples
- Original: "He drinks an every day cup of coffee."
- Fix 1 (frequency): "He drinks a cup of coffee every day."
- Fix 2 (adjective): "He drinks his everyday cup of coffee."
- Original: "She carried an every day bag."
- Fix: "She carried an everyday bag."
- Original: "An every day task is to check email."
- Fix 1 (frequency): "A task I do every day is checking email."
- Fix 2 (simple): "Checking email is part of my everyday tasks."
Real usage and tone: when to prefer everyday, every day, or another word
Choose based on tone and clarity: daily suits formal or technical contexts; every day is neutral and clear for frequency; each day emphasizes individual days; everyday describes ordinary things.
- Formal/technical: daily - "Backups run daily."
- Neutral frequency: every day - "I practice every day."
- Emphasis on individuals: each day - "We count results each day."
- Descriptive adjective: everyday - "everyday problems, everyday clothes"
Similar mistakes and common confusions to watch for
Fixing this habit helps with other pairs: daily vs everyday, each day vs every day, sometime vs some time, and misplaced articles before adverbial phrases.
- daily vs everyday: daily = adjective or adverb; everyday = adjective only
- each day vs every day: near synonyms; each day stresses separate days
- sometime vs some time: sometime = at an unspecified time; some time = a period
- Watch for articles before adverbial phrases (e.g., "an always" is wrong)
FAQ
Is "an every day" ever grammatically correct?
Almost never. If you need an article before a noun, use "an everyday" (one word) + noun. If you mean frequency, use "every day" without an article: "She exercises every day."
Can I use daily instead of every day?
Yes. Use daily for a formal or technical tone: "We meet daily" or "Daily reports are due." Both daily and every day express frequency; daily also functions as an adjective.
Should I hyphenate every-day before a noun?
No. Modern usage prefers everyday (one word) for adjectives. Only hyphenate if a specific style guide requires it.
How can I quickly tell whether to write everyday or every day?
Ask: does it describe a noun (what kind of)? → everyday. Does it tell how often? → every day. Or do the swap test: replace every day with each day - if it fits, use two words.
What quick searches or checks help catch this error in a draft?
Search for "an every" or "a every" - those are almost always wrong. Also search for "every day" and run the swap test; if it fails, try everyday or rephrase using daily/each day.
Want a quick second check?
If you're unsure, paste the sentence into a grammar checker, run the swap test, or apply the rewrite templates above. Small fixes like this improve clarity and tone.
Use the example rewrites as editing templates, adapt them to context, and publish with confidence.