Standard Lemma guide

ides

noun · 4 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

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  • /aɪdz/
  • US: Recorded audio is listed in the source snapshot.
  • rhymes with -aɪdz

1

noun

Meaning 1

The notional full-moon day of a Roman month, occurring on the 15th day of the four original 31-day months (March, May, Quintilis or July, and October) and on the 13th day of all other months.

Definition source: English Wiktionary via Wiktextract

Usage: capitalized, historical, often

Examples

  • The third day before the ides of March is March 13th; the third ides of August is August 11th; and the third of the ides of November is November 11th.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

plural of ide

Definition source: English Wiktionary via Wiktextract

Usage: form-of, plural

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

Alternative form of ides: the notional full moon of a Roman month, used in Roman dating.

Definition source: English Wiktionary via Wiktextract

Usage: alt-of, alternative

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

in the Roman calendar: the 15th of March or May or July or October or the 13th of any other month

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: day

History

Etymology

From Middle English ides, idus, from Anglo-Norman and Old French ides, from Latin īdūs, a fourth-declension plurale tantum, from the Latin practice of treating most recurring calendrical days as plurals. The Latin term is cognate with Oscan eiduis, both perhaps deriving from an unknown Etruscan term. Middle English and Old French also used the singular form ide.

See ide.

Across languages

Translations

12 source translations are retained for this English entry.

  • Catalan: idus — day in the Roman calendar
  • Dutch: iden — day in the Roman calendar
  • Finnish: idus — day in the Roman calendar
  • French: ides — day in the Roman calendar
  • German: Iden — day in the Roman calendar
  • Greek: ειδοί (eidoí) — day in the Roman calendar
  • Hungarian: idus — day in the Roman calendar
  • Latin: Īdūs — day in the Roman calendar
  • Polish: idy — day in the Roman calendar
  • Portuguese: idos — day in the Roman calendar
  • Russian: и́ды (ídy) — day in the Roman calendar
  • Spanish: idus — day in the Roman calendar