decennial
/dɪˈsɛnɪəɫ/
"decennial" is a 9-letter English headword indexed on PlainSpell.
The verdict
“decennial” is uncommon English (frequency #85,158 among 3,470 “D” headwords), classed as a noun. The kind of spelling people second-guess.
- #85,158
- frequency rank, English
- 3,470
- “D” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Synonym of decade, a ten-year period.
Corpus desk
Index EN-decennial · decennial · English
decennial · rank #85,158 · 0 variants · 0 confusables
- FREQ-RARE #85,158
- LEN-LONG 9 letters
- VOW-4 4 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 3,470
- PHOTO-FINISH declarer
Nearest frequency peer: declarer (+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 “decennial”
Sparse band: bars invert rank so rarer forms read shorter
- dala
dala
14,849 corpus weight
- decennial
decennial
14,843 corpus weight
- declarer
declarer
14,842 corpus weight
- deffo
deffo
14,840 corpus weight
- Deimos
Deimos
14,839 corpus weight
- deportment
deportment
14,835 corpus weight
What this shows Long-tail view: where “decennial” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | decennial |
| Language | English |
| Part of speech | Noun |
| IPA | /dɪˈsɛnɪəɫ/ |
| Letters | 9 |
| Frequency rank | #85,158 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “decennial” in English
Rare enough to double-check
decennial is uncommon English at frequency #85,158 among 3,470 “D” headwords, classed as anoun, transcribed /dɪˈsɛnɪəɫ/. Rarity is why readers land here mid-draft. 3 senses are on record.
The misspelling generator found no plausible variants for decennial, and the word's spelling is regular enough that our generator found nothing worth flagging. This headword has no recorded confusable partner, since nothing in our dataset looks or sounds close enough to cause mix-ups.
Etymologically, the entry records: From Latin decennialis, from decennium (“10-year period”) + -ālis, from decennis (“10-year”) + -ium (“-ium”, suffix forming abstract nouns), from decem (“ten”) + annus (“year”) + -is (suffix forming compound adjectives). The correct English form is decennial, spelled D-E-C-E-N-N-I-A-L.
Definition
- 1Synonym of decade, a ten-year period.
- 2A tenth anniversary, particularly
- 3A tenth anniversary, particularly
Recorded use
Wiktionary exampleThese source excerpts show how decennial appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Roman coins mentioning the vota publica for Macrinus are RIC IV.1 5–13; on vota publica for the decennials and vicennials of emperors in the 2nd and 3rd c. ad, see Chastagnol 1984.
Etymology
From Latin decennialis, from decennium (“10-year period”) + -ālis, from decennis (“10-year”) + -ium (“-ium”, suffix forming abstract nouns), from decem (“ten”) + annus (“year”) + -is (suffix forming compound adjectives).
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); 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
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Similar English words by spelling shape
Same letter count and similar misspelling depth for "decennial", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 9 letters (nearest by frequency rank).