ipso facto

/ˌɪpsəʊ ˈfæktəʊ/

//ˌɪpsəʊ ˈfæktəʊ// adv

"ipso-facto" is a 9-letter English headword indexed on PlainSpell.

The verdict

“ipso facto” is outside the top-ranked English vocabulary, used as an adverb - the kind of word writers most often double-check.

Unranked
below top-frequency English
10
letters

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - By that very fact itself; actually.

Key facts for ipso facto
PropertyValue
Headwordipso facto
LanguageEnglish
Part of speechAdverb
IPA/ˌɪpsəʊ ˈfæktəʊ/
Letters10
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “ipso facto” sits in English frequency

ipso facto falls outside the top-100,000 ranked English words, the long-tail zone of technical, archaic, or low-frequency vocabulary, exactly where readers second-guess spellings most.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Spelling & Dictionary Insight

The English entry for ipso facto is 10 letters long, classified as an adverb, and transcribed in the International Phonetic Alphabet as /ˌɪpsəʊ ˈfæktəʊ/. It sits outside the most-frequent rank tiers, which is often why uncommon words generate more spelling variants per reader. The dominant gloss from Wiktionary reads: "By that very fact itself; actually.".

ipso facto doesn't appear in our generated misspelling index, a sign its spelling follows regular English conventions. No confusable counterpart is on file for this word, suggesting its spelling stands apart enough that readers rarely confuse it with something else.

Etymologically, the entry records: Borrowed from Latin ipsō factō (“by the same fact”). The correct English form is ipso facto, spelled I-P-S-O- -F-A-C-T-O.

Definition

  1. 1
    By that very fact itself; actually.

Etymology

Borrowed from Latin ipsō factō (“by the same fact”).

This word in other languages

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.

Frequently Asked Questions

How do you spell "ipso facto"?
"ipso facto" is spelled I-P-S-O- -F-A-C-T-O. The IPA pronunciation is /ˌɪpsəʊ ˈfæktəʊ/.
What does "ipso facto" mean?
As an adverb, "ipso facto" means: By that very fact itself; actually.
How do you pronounce "ipso facto"?
The IPA (International Phonetic Alphabet) transcription for "ipso facto" is /ˌɪpsəʊ ˈfæktəʊ/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "ipso facto"?
Borrowed from Latin ipsō factō (“by the same fact”). See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Using “ipso facto”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is I-P-S-O- -F-A-C-T-O - every other letter order is a misspelling in standard orthography.
  • Say it as /ˌɪpsəʊ ˈfæktəʊ/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Browse more English words and confusable pairs in the same reference. English words
Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

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

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list