backpack

/ˈbæk.pæk/

//ˈbæk.pæk// noun

By · According to Wiktionary data (CC BY-SA) ·

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

The verdict

“backpack” has 13 generated spelling variants in the English index at frequency #9,851. The variants make it a useful spelling check.

#9,851
frequency rank, English
4,121
“B” headwords
13
tracked misspellings
3
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A knapsack, sometimes mounted on a light frame, but always supported by straps, worn on a person’s back for the purpose of carrying things, especially when hiking, or on a student's back when carry...

Corpus desk

Index EN-backpack · backpack · English

backpack · rank #9,851 · 13 variants · 3 confusables

  • FREQ-COMMON #9,851
  • LEN-LONG 8 letters
  • VOW-2 2 vowels
  • CONFUS-LOW 3 pairs
  • VAR-HIGH 13 variants
  • BOOK-MID 4,121
  • PHOTO-FINISH avengers

Nearest frequency peer: avengers (-1 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.

Rank peers near misspelling magnet “backpack”

Same rarity band: useful when a typo lands on a peer headword

corpus weight

What this shows “backpack” sits among these FrequencyWords peers; misspelling depth is tracked separately in the edit-distance chart.

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

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

backpack vs blackjack
78% similar
backpack vs backtrack
78% similar
backpack vs backpacker
80% similar

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

Key facts for backpack
PropertyValue
Headwordbackpack
LanguageEnglish
Part of speechNoun
IPA/ˈbæk.pæk/
Letters8
Frequency rank#9,851
Misspellings tracked13
Confusable pairs3
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “backpack”

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

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

Scale is logarithmic (each tick is 10× rarer). Same rarity band neighbours include “avengers” (#9,850), “balcony” (#9,852), “banker” (#9,853). Among 4,121 “B” headwords, “backpack” is #9,851. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 13 spelling variants around backpack (IPA /ˈbæk.pæk/), anoun. Corpus frequency is #9,851 among 4,121 “B” headwords. Wiktionary lists 2 senses, so context still picks the gloss.

Our generated misspelling index lists 13 likely wrong-spelling variants for backpack, with forms such as "abckpack", "bacckpack", and "backapck". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. It also participates in 3 confusable-pair relationships, "blackjack", "backtrack", "backpacker", since the words sound or look close enough that writers reach for the wrong one mid-sentence.

Etymologically, the entry records: From back + pack. The correct English form is backpack, spelled B-A-C-K-P-A-C-K.

Definition

  1. 1
    A knapsack, sometimes mounted on a light frame, but always supported by straps, worn on a person’s back for the purpose of carrying things, especially when hiking, or on a student's back when carrying books.
  2. 2
    A similarly placed item containing a parachute or other life-support equipment.

Recorded use

Wiktionary examples

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

  1. Rachel discovered that she could also keep things in her backpack that were important to her, nobody would know about them because they would be hidden. These important things included a small round rock that she had found […]
  2. Many seats carry reservation labels, while the luggage racks are festooned with backpacks and suitcases.

Etymology

From back + pack.

Synonyms

haversackknapsackpacksackrucksackbookbag

This word in other languages

mochila(Español)sac à dos(Français)Rucksack(Deutsch)mochila(Português)

Common misspellings

Also misspelled as:

  • abckpack
  • bacckpack
  • backapck
  • backkpack
  • backpacck
  • backpackk
  • backpakc
  • backpcak
  • backppack
  • bacpkack
  • bakcpack
  • bbackpack
  • bcakpack

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of backpack - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.

abckpack2bacckpack1backapck2backkpack1backpacck1backpackk1backpakc2backpcak2
Edit distance from "backpack"

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 "backpack"?
"backpack" is spelled B-A-C-K-P-A-C-K. The IPA pronunciation is /ˈbæk.pæk/.
What does "backpack" mean?
As a noun, "backpack" means: A knapsack, sometimes mounted on a light frame, but always supported by straps, worn on a person’s back for the purpose of carrying things, especially when hiking, or on a student's back when carry...
What words are commonly confused with "backpack"?
"backpack" is commonly confused with "blackjack", "backtrack", "backpacker". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "backpack"?
The IPA (International Phonetic Alphabet) transcription for "backpack" is /ˈbæk.pæk/. 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 "backpack"?
From back + pack. 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 "backpack", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 8 letters (nearest by frequency rank).

avengers#9,850allergic#9,845crystals#9,867trillion#9,833

Similar misspelling depth

Headwords with a similar count of attested misspellings (13 here; floor ≥5).

academics13 variantstraumatic13 variantsswinging13 variantsstarving13 variants

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

Source: FrequencyWords open word-frequency list