SundayvssunnahWhat's the difference?

Which to use

“Sunday” and “sunnah” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#1,287
“Sunday” frequency rank
#47,360
“sunnah” frequency rank
48647
confusion score

Side-by-Side Comparison

Feature Sunday sunnah
Definition The first day of the week in many religious traditions, and the seventh day of the week in systems using the ISO 8601 standard; the Christian Sabbath; the Lord's Day; it follows Saturday and precedes Monday. (An example of) Muhammad's way of life, as recorded in the hadiths, especially when viewed as a model for Muslims to emulate.

Letter map: Sunday vs sunnah

Shared letters muted; letters that set Sunday and sunnah apart highlighted. Shared run: 4. Sunday (CVCCVV) and sunnah (CVCCVC) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

6 ch
Sunday
6 ch
sunnah

Pair insight - Sunday / sunnah

Sunday and sunnah are indexed as a confusable English pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 48647, derived from the frequency rank of both members and their visual similarity.

Sunday is recorded at frequency rank #1,287, classified as anoun, pronounced /ˈsʌn.deɪ/. sunnah is at rank #47,360, tagged as anoun.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 48647, this pair ranks #191,050 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of Sunday vs sunnah

Shared letters: ansu. Private to "Sunday": dy. Private to "sunnah": h.

"Sunday" · 6 letters · shape CVCCVV  ·  "sunnah" · 6 letters · shape CVCCVC

Known mistypes of this pair

  • Sundaysnuday · ssunday · sudnay · sunady · sundayy · sundday · sundya · sunnday
  • sunnahsnunah · ssunnah · sunah · sunanh · sunnahh · sunnha · usnnah

Frequently Asked Questions

Is swapping "Sunday" for "sunnah" ever safe?
No. They share most of their letters but differ in 2 positions, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.
In ordinary English text, does "Sunday" or "sunnah" show up more?
"Sunday" is the more common of the two: it sits at frequency rank #1,287 in our English list, against #47,360 for "sunnah". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Done with this confusable. These links stay specific to "Sunday" and "sunnah".

  • Full dictionary entry for "Sunday" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "sunnah" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #191,050 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "Sunday" and "sunnah" also get mixed up with nearby pairs, the highest-scored neighbour is "sundae vs sunnah". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #191,050 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list