tailfin
"tailfin" is a 7-letter English headword indexed on PlainSpell.
The verdict
“tailfin” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 7
- letters
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A fin at the tail of a fish, caudal fin
Corpus desk
Index EN-tailfin · tailfin · English
tailfin · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-LONG 7 letters
- VOW-3 3 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "T" 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.
| Property | Value |
|---|---|
| Headword | tailfin |
| Language | English |
| Part of speech | Noun |
| Letters | 7 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “tailfin” in English
Rare enough to double-check
tailfin is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. 3 senses are on record.
Our edit-distance generator produced no likely misspellings for tailfin, which points to an orthography that plays by predictable English rules. Our confusable-pair dataset has no match for it, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.
Etymologically, the entry records: From tail + fin. The correct English form is tailfin, spelled T-A-I-L-F-I-N.
Definition
- 1A fin at the tail of a fish, caudal fin
- 2A fin on the tail of an aircraft, vertical stabilizer
- 3A fin-like projection at the rear of a car, common on American cars of the 1950s.
Etymology
From tail + fin.
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.