alter ego

/ˈɔːl.təɹ iːɡəʊ/

//ˈɔːl.təɹ iːɡəʊ// noun

"alter-ego" is a 8-letter English headword indexed on PlainSpell.

The verdict

“alter ego” is outside the top-ranked English vocabulary, used as a noun - the kind of word writers most often double-check.

Unranked
below top-frequency English
9
letters

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - An individual's alternate personality or persona; another self.

Key facts for alter ego
PropertyValue
Headwordalter ego
LanguageEnglish
Part of speechNoun
IPA/ˈɔːl.təɹ iːɡəʊ/
Letters9
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “alter ego” sits in English frequency

alter ego 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 alter ego is 9 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /ˈɔːl.təɹ iːɡəʊ/. It sits outside the most-frequent rank tiers, which is often why uncommon words generate more spelling variants per reader. Wiktionary records 3 distinct senses for this headword, so context determines which meaning a reader should apply.

Zero misspellings are on record for alter ego in our index, typically a sign the spelling maps closely to how the word sounds. Our dataset records no confusable match here, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.

Etymologically, the entry records: From Latin alter ego (literally “other me”). The correct English form is alter ego, spelled A-L-T-E-R- -E-G-O.

Definition

  1. 1
    An individual's alternate personality or persona; another self.
  2. 2
    A very close and intimate friend.
  3. 3
    A corporation used by a person to conduct personal business in an attempt to shield himself or herself from personal liability, and which a court may penetrate by "piercing the corporate veil" to impose liability on the person when they commit fraud or injustice.

Etymology

From Latin alter ego (literally “other me”).

Synonyms

alter idem

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 "alter ego"?
"alter ego" is spelled A-L-T-E-R- -E-G-O. The IPA pronunciation is /ˈɔːl.təɹ iːɡəʊ/.
What does "alter ego" mean?
As a noun, "alter ego" means: An individual's alternate personality or persona; another self.
How do you pronounce "alter ego"?
The IPA (International Phonetic Alphabet) transcription for "alter ego" is /ˈɔːl.təɹ iːɡəʊ/. 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 "alter ego"?
From Latin alter ego (literally “other me”). 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 “alter ego”

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

  • The one correct English spelling is A-L-T-E-R- -E-G-O - every other letter order is a misspelling in standard orthography.
  • Say it as /ˈɔːl.təɹ iːɡəʊ/ (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