of course
/əv ˈkɔːs/
"of-course" is a 8-letter English headword indexed on PlainSpell.
The verdict
“of course” is uncommon English (outside the top frequency list), classed as an adjective. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 9
- letters
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - That is part of ordinary behaviour or custom; customary, natural.
Corpus desk
Index EN-of-course · of course · English
of course · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-LONG 9 letters
- VOW-4 4 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "O" thin
- PHOTO-UNK Peer pending
Read with this headword: Spelling guide for this pattern
Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.
| Property | Value |
|---|---|
| Headword | of course |
| Language | English |
| Part of speech | Adjective |
| IPA | /əv ˈkɔːs/ |
| Letters | 9 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “of course” in English
Rare enough to double-check
of course is uncommon English outside the top frequency list, classed as anadjective, transcribed /əv ˈkɔːs/. Rarity is why readers land here mid-draft. Gloss: "That is part of ordinary behaviour or custom; customary, natural.".
of course doesn't appear in our generated misspelling index, since its letter pattern doesn't lend itself to common typo substitutions. This entry stands alone in our confusable dataset, a sign it's visually distinctive enough not to be mixed up with another word.
No borrowing history is documented for this entry, so its spelling is best explained by sound-to-letter mapping rather than etymology. The correct English form is of course, spelled O-F- -C-O-U-R-S-E.
Definition
- 1That is part of ordinary behaviour or custom; customary, natural.
Recorded use
Wiktionary examplesThese source excerpts show how of course appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Had Francesca grown up by his side, she would have loved him; and a thousand indulgences, the result of careless good-nature, would have linked the child to the parent, till the mutual affection would have become a thing of course.
I am not using a mere phrase of course, when I say that the feelings with which I bear a part in the ceremony of this day, are such as I find it difficult to utter in words.
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.