bluefin

noun

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

"bluefin" is a 7-letter English headword indexed on PlainSpell.

The verdict

“bluefin” is uncommon English (frequency #59,906 among 4,121 “B” headwords), classed as a noun. The kind of spelling people second-guess.

#59,906
frequency rank, English
4,121
“B” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - bluefin tuna, any of a number of types of tuna characterised by their blue fins.

Corpus desk

Index EN-bluefin · bluefin · English

bluefin · rank #59,906 · 0 variants · 0 confusables

  • FREQ-RARE #59,906
  • LEN-LONG 7 letters
  • VOW-3 3 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 4,121
  • PHOTO-FINISH blare

Nearest frequency peer: blare (-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.

Long-tail ranks near “bluefin”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

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

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for bluefin
PropertyValue
Headwordbluefin
LanguageEnglish
Part of speechNoun
Letters7
Frequency rank#59,906
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “bluefin” in English

Word frequency stretches from the small set of words we reach for constantly (left) out to the long tail barely used once in a while (right).bluefinfalls 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: “blare” (#59,905), “Binks” (#59,903), “Bolger” (#59,909). Among 4,121 “B” headwords, “bluefin” is #59,906. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

bluefin is uncommon English at frequency #59,906 among 4,121 “B” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "bluefin tuna, any of a number of types of tuna characterised by their blue fins.".

No generated misspelling entries exist for bluefin in our index, suggesting the orthography follows predictable English patterns. This entry stands alone in our confusable dataset, since its spelling is unusual enough that it doesn't cluster with a lookalike.

Etymologically, the entry records: From blue + fin. The correct English form is bluefin, spelled B-L-U-E-F-I-N.

Definition

  1. 1
    bluefin tuna, any of a number of types of tuna characterised by their blue fins.

Etymology

From blue + fin.

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 "bluefin"?
"bluefin" is spelled B-L-U-E-F-I-N.
What does "bluefin" mean?
As a noun, "bluefin" means: bluefin tuna, any of a number of types of tuna characterised by their blue fins.
What is the origin of the word "bluefin"?
From blue + fin. 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 "bluefin", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 7 letters (nearest by frequency rank).

Bouvier#59,916betwixt#59,895bestial#59,894Benazir#59,891

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

Source: FrequencyWords open word-frequency list