quinquennium
/kwɪŋˈkwɛniəm/
"quinquennium" is a 12-letter English headword indexed on PlainSpell.
The verdict
“quinquennium” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 12
- letters
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A period of five years.
Corpus desk
Index EN-quinquennium · quinquennium · English
quinquennium · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-MEGA 12 letters
- VOW-6 6 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "Q" 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 | quinquennium |
| Language | English |
| Part of speech | Noun |
| IPA | /kwɪŋˈkwɛniəm/ |
| Letters | 12 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “quinquennium” in English
Rare enough to double-check
quinquennium is uncommon English outside the top frequency list, classed as anoun, transcribed /kwɪŋˈkwɛniəm/. Rarity is why readers land here mid-draft. Gloss: "A period of five years.".
quinquennium has no tracked misspelling variants, and the word's spelling is regular enough that our generator found nothing worth flagging. We don't track a confusable pairing for this entry, 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 quīnquennium, from quinquennis (“5-year”) + -ium (suffix forming abstract nouns). The correct English form is quinquennium, spelled Q-U-I-N-Q-U-E-N-N-I-U-M.
Definition
- 1A period of five years.
Recorded use
Wiktionary exampleThese source excerpts show how quinquennium appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
During the quinquennium from 1991 to 1995, infant mortality increased.
Etymology
From Latin quīnquennium, from quinquennis (“5-year”) + -ium (suffix forming abstract nouns).
Synonyms
This word in other languages
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.