passer-by

/ˈpɑː.sə.baɪ/

//ˈpɑː.sə.baɪ// noun

"passer-by" is a 8-letter English headword indexed on PlainSpell.

The verdict

“passer-by” 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) - A person who is passing by (that is, walking past).

Corpus desk

Index EN-passer-by · passer-by · English

passer-by · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-LONG 9 letters
  • VOW-3 3 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "P" 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 passer-by
PropertyValue
Headwordpasser-by
LanguageEnglish
Part of speechNoun
IPA/ˈpɑː.sə.baɪ/
Letters9
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “passer-by” in English

passer-byfalls 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.

Rare enough to double-check

passer-by is uncommon English outside the top frequency list, classed as anoun, transcribed /ˈpɑː.sə.baɪ/. Rarity is why readers land here mid-draft. Gloss: "A person who is passing by (that is, walking past).".

The misspelling generator found no plausible variants for passer-by, which points to an orthography that plays by predictable English rules. Our confusable-pair dataset has no match for it, since its spelling is unusual enough that it doesn't cluster with a lookalike.

Etymologically, the entry records: From passer + by. Compare bystander. The correct English form is passer-by, spelled P-A-S-S-E-R---B-Y.

Definition

  1. 1
    A person who is passing by (that is, walking past).

Recorded use

Wiktionary examples

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

  1. When he tripped and fell in the street, several kind passers-by helped him up.
  2. With a little manœuvring they contrived to meet on the doorstep which was […] in a boiling stream of passers-by, hurrying business people speeding past in a flurry of fumes and dust in the bright haze.

Etymology

From passer + by. Compare bystander.

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 "passer-by"?
"passer-by" is spelled P-A-S-S-E-R---B-Y. The IPA pronunciation is /ˈpɑː.sə.baɪ/.
What does "passer-by" mean?
As a noun, "passer-by" means: A person who is passing by (that is, walking past).
How do you pronounce "passer-by"?
The IPA (International Phonetic Alphabet) transcription for "passer-by" is /ˈpɑː.sə.baɪ/. 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 "passer-by"?
From passer + by. Compare bystander. 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