Standard Lemma guide

decennial

adj · noun · 5 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • UK: /dɪˈsɛnɪəɫ/
  • CMU ARPABET: D AH0 S EH1 N IY0 AH0 L Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

adj

Meaning 1

Occurring every ten years.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

adj

Meaning 2

Of or related to a ten-year period, as a term of office.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

Synonym of decade, a ten-year period.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: decade

Antonyms: none provided

4

noun

Meaning 4

A tenth anniversary, particularly

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

noun

Meaning 5

A tenth anniversary, particularly

Synonym of decennalia, the festival and religious ritual held in the 10th year of a Roman emperor's reign.

Definition source: English Wiktionary via Wiktextract

Usage: historical

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: decennalia

Antonyms: none provided

History

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).

Across languages

Translations

8 source translations are retained for this English entry.

  • Catalan: decennal — Occurring every ten years
  • French: décennal — Occurring every ten years
  • Italian: decennale — Occurring every ten years
  • Spanish: decenal — Occurring every ten years
  • Catalan: decennal — tenth anniversary of an event
  • French: décennal — tenth anniversary of an event
  • Italian: decennale — tenth anniversary of an event
  • Spanish: decenal — tenth anniversary of an event