fullback

/ˈfʊlˌbæk/

//ˈfʊlˌbæk// noun

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

The verdict

“fullback” is a moderately-common English word, ranked #21,804 in English word frequency and used as a noun.

#21,804
frequency rank, English
8
letters
11
tracked misspellings
1
confusable pair

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - An offensive back whose primary jobs are to block in advance of the halfback on running plays and for the quarterback on passing plays.

Visual similarity to commonly confused words

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

fullback vs fallback
88% similar

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

Key facts for fullback
PropertyValue
Headwordfullback
LanguageEnglish
Part of speechNoun
IPA/ˈfʊlˌbæk/
Letters8
Frequency rank#21,804
Misspellings tracked11
Confusable pairs1
SourceWiktionary (kaikki.org)

Where “fullback” sits in English 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). fullback 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 English entry for fullback is 8 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /ˈfʊlˌbæk/. Corpus data places it at rank #21,804 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 4 distinct senses for this headword, so context determines which meaning a reader should apply.

Our generated misspelling index lists 11 likely wrong-spelling variants for fullback, with forms such as "ffullback", "flulback", and "fulback". Every one of these variants traces to a single-character edit -- an added or dropped letter, a swapped consonant, or a vowel swap -- the kind of slip a spell-checker is built to catch. It also participates in 1 confusable-pair relationship, "fallback", since the words sound or look close enough that writers reach for the wrong one mid-sentence.

Etymologically, the entry records: From full + back. The correct English form is fullback, spelled F-U-L-L-B-A-C-K.

Definition

  1. 1
    An offensive back whose primary jobs are to block in advance of the halfback on running plays and for the quarterback on passing plays.
  2. 2
    A position behind the main line of backs in both rugby union and rugby league. In rugby union, they wear number 15 jersey at the start of play and are the last line of defence responsible for catching punts.
  3. 3
    A defensive player who assists the goalie in preventing the opposing team from scoring.
  4. 4
    A player who plays on the left or right side of defence.

Etymology

From full + back.

This word in other languages

Common misspellings

Also misspelled as: ffullback,flulback,fulback,fulblack,fullabck,fullbacck,fullbackk,fullbakc,fullbback,fullbcak,ufllback

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of fullback - counted as single-character edits (an insertion, a deletion, or a substituted letter). The larger the bar, the easier the typo is to spot; one-edit slips are the ones that sneak past readers.

ffullback1flulback2fulback1fulblack2fullabck2fullbacck1fullbackk1fullbakc2
Edit distance from "fullback"

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 "fullback"?
"fullback" is spelled F-U-L-L-B-A-C-K. The IPA pronunciation is /ˈfʊlˌbæk/.
What does "fullback" mean?
As a noun, "fullback" means: An offensive back whose primary jobs are to block in advance of the halfback on running plays and for the quarterback on passing plays.
What words are commonly confused with "fullback"?
"fullback" is commonly confused with "fallback". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "fullback"?
The IPA (International Phonetic Alphabet) transcription for "fullback" is /ˈfʊlˌbæk/. 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 "fullback"?
From full + back. 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.

Using “fullback”

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

  • The one correct English spelling is F-U-L-L-B-A-C-K - every other letter order is a misspelling in standard orthography.
  • Say it as /ˈfʊlˌbæk/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Don't mix it up with “fallback” - see the side-by-side comparison. fullback vs fallback
  • Browse more English words and confusable pairs in the same reference. English 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