pei

[ˈpej]

/[ˈpej]/ noun

The verdict

“pei” is a moderately-common Spanish word, ranked #45,496 in Spanish word frequency and used as a noun.

#45,496
frequency rank, Spanish
3
letters
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Decimoséptima letra del alfabeto hebreo

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

pei vs PP
0% similar
pei vs pm
33% similar
pei vs po
33% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for pei
PropertyValue
Headwordpei
LanguageSpanish
Part of speechNoun
IPA[ˈpej]
Letters3
Frequency rank#45,496
Misspellings tracked0
Confusable pairs20
SourceWiktionary (kaikki.org)

Where “pei” sits in Spanish frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). pei lands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Spelling & Dictionary Insight

The Spanish entry for pei is 3 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as [ˈpej]. Corpus data places it at rank #45,496 in overall Spanish word frequency, marking it as uncommon enough that many writers pause before typing it. The dominant gloss from Wiktionary reads: "Decimoséptima letra del alfabeto hebreo".

pei doesn't appear in our generated misspelling index, and the word's spelling is regular enough that our generator found nothing worth flagging. It also participates in 20 confusable-pair relationships, "PP", "pm", "po", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.

This headword's origin isn't recorded in our source data, so its spelling is easiest explained by how it's pronounced rather than where it came from. The correct Spanish form is pei, spelled P-E-I.

Definition

  1. 1
    Decimoséptima letra del alfabeto hebreo

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 Spanish corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "pei"?
"pei" is spelled P-E-I. The IPA pronunciation is [ˈpej].
What does "pei" mean?
As a noun, "pei" means: Decimoséptima letra del alfabeto hebreo
What words are commonly confused with "pei"?
"pei" is commonly confused with "PP", "pm", "po". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "pei"?
The IPA (International Phonetic Alphabet) transcription for "pei" is [ˈpej]. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "pei" come from?
"pei" is a Spanish word. PlainSpell covers definitions, pronunciations, and spelling data across English, Spanish, Portuguese, French, and German.
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 “pei”

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

  • The one correct Spanish spelling is P-E-I - every other letter order is a misspelling in standard orthography.
  • Say it as [ˈpej] (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Don't mix it up with “PP” - see the side-by-side comparison. pei vs PP
  • Browse more Spanish words and confusable pairs in the same reference. Spanish 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