flyby

/ˈflaɪˌbaɪ/

//ˈflaɪˌbaɪ// noun

"flyby" is a 5-letter English headword indexed on PlainSpell.

The verdict

“flyby” is uncommon English (frequency #53,551 among 2,507 “F” headwords), classed as a noun. The kind of spelling people second-guess.

#53,551
frequency rank, English
2,507
“F” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A flight past a celestial object in order to make observations.

Corpus desk

Index EN-flyby · flyby · English

flyby · rank #53,551 · 0 variants · 0 confusables

  • FREQ-RARE #53,551
  • LEN-MID 5 letters
  • VOW-2 2 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 2,507
  • PHOTO-FINISH Fonseca

Nearest frequency peer: Fonseca (+2 rank slots)

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.

Long-tail ranks near “flyby”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “flyby” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for flyby
PropertyValue
Headwordflyby
LanguageEnglish
Part of speechNoun
IPA/ˈflaɪˌbaɪ/
Letters5
Frequency rank#53,551
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “flyby” in English

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

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

Ticks step logarithmically, so each one marks a roughly tenfold drop in how often the word turns up. Rare peers in the same band: “Fonseca” (#53,553), “fortis” (#53,554), “flay” (#53,547). Among 2,507 “F” headwords, “flyby” is #53,551. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

flyby is uncommon English at frequency #53,551 among 2,507 “F” headwords, classed as anoun, transcribed /ˈflaɪˌbaɪ/. Rarity is why readers land here mid-draft. 5 senses are on record.

Our edit-distance generator produced no likely misspellings for flyby, which points to an orthography that plays by predictable English rules. Our confusable-pair dataset has no match for it, which typically means the spelling is too distinctive to be mistaken for another word.

Etymologically, the entry records: Deverbal from fly by. The correct English form is flyby, spelled F-L-Y-B-Y.

Definition

  1. 1
    A flight past a celestial object in order to make observations.
  2. 2
    A low-level ceremonial flight, typically in connection with an airshow or a military parade.
  3. 3
    A brief visit.
  4. 4
    A sailby performed by a hydrofoil vessel while hydrofoiling.
  5. 5
    A three-dimensional animated sequence in which the camera moves past an object or scenery.

Recorded use

Wiktionary examples

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

  1. The upcoming flyby of Halley's comet is expected to provide new information on the nature of the comet.
  2. Farthest from the dim red dwarf Ondeste, the ice dwarf Maisuth has attracted no interest beyond a cursory flyby by automated probe in 1874. No significant resources were noted.

Etymology

Deverbal from fly by.

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); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "flyby"?
"flyby" is spelled F-L-Y-B-Y. The IPA pronunciation is /ˈflaɪˌbaɪ/.
What does "flyby" mean?
As a noun, "flyby" means: A flight past a celestial object in order to make observations.
How do you pronounce "flyby"?
The IPA (International Phonetic Alphabet) transcription for "flyby" is /ˈflaɪˌbaɪ/. 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 "flyby"?
Deverbal from fly by. 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.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "flyby", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 5 letters (nearest by frequency rank).

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

Source: FrequencyWords open word-frequency list