septuagenarian
/ˌsɛptəd͡ʒɪˈnɛɹiən/
"septuagenarian" is a 14-letter English headword indexed on PlainSpell.
The verdict
“septuagenarian” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 14
- letters
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Synonym of seventysomething: a person between 70 and 79 years old.
Corpus desk
Index EN-septuagenarian · septuagenarian · English
septuagenarian · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-MEGA 14 letters
- VOW-7 7 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "S" 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 | septuagenarian |
| Language | English |
| Part of speech | Noun |
| IPA | /ˌsɛptəd͡ʒɪˈnɛɹiən/ |
| Letters | 14 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “septuagenarian” in English
Rare enough to double-check
septuagenarian is uncommon English outside the top frequency list, classed as anoun, transcribed /ˌsɛptəd͡ʒɪˈnɛɹiən/. Rarity is why readers land here mid-draft. Gloss: "Synonym of seventysomething: a person between 70 and 79 years old.".
The misspelling generator found no plausible variants for septuagenarian, and the word's spelling is regular enough that our generator found nothing worth flagging. 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 Latin septuagenarius (“containing 70”) + -an (suffix forming adjectives and representative nouns), either directly or via French septuagénaire, from Latin septuagenus (“70 each”) + -arius (“-ary”), from Latin septuāginta (“seven tens, 70”). The correct English form is septuagenarian, spelled S-E-P-T-U-A-G-E-N-A-R-I-A-N.
Definition
- 1Synonym of seventysomething: a person between 70 and 79 years old.
Recorded use
Wiktionary examplesThese source excerpts show how septuagenarian appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Mary Moon, she's a vegetarian. Mary Moon, Mary Moon, Mary Moon. Mary Moon, who will outlive all the septuagenarians.
For a ley hunter, local people – particularly the elderly – can be mines of information. Devereux and Thomson recount how they asked a septuagenarian in a remote village the location of an elusive stone, without mentioning the subject of leys: […]
Etymology
From Latin septuagenarius (“containing 70”) + -an (suffix forming adjectives and representative nouns), either directly or via French septuagénaire, from Latin septuagenus (“70 each”) + -arius (“-ary”), from Latin septuāginta (“seven tens, 70”).
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.