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 uncommon English (outside the top frequency list), classed as a noun. 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) - An individual's alternate personality or persona; another self.

Corpus desk

Index EN-alter-ego · alter ego · English

alter ego · 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 "A" 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.

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

Long-tail rank of “alter ego” in English

alter egosits beyond the 100,000 most-frequent English words, in the long tail of technical, archaic, or otherwise rare vocabulary where spelling doubt tends to strike hardest.

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

Rare enough to double-check

alter ego is uncommon English outside the top frequency list, classed as anoun, transcribed /ˈɔːl.təɹ iːɡəʊ/. Rarity is why readers land here mid-draft. 3 senses are on record.

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.

Recorded use

Wiktionary examples

These source excerpts show how alter ego appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. Clark Kent's coworkers finally discovered his alter ego, Superman.
  2. […] a belief in the possibility of a man possessing an alter ego in the form of some animal such as a crocodile or a hippopotamus. It is believed that such a person's life is bound up with that of the animal to such an extent that, whatever affects the one produces a corresponding impression upon the other, and that if one dies the other must speedily do…

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.

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

Source: FrequencyWords open word-frequency list