Standard Lemma guide

cognomen

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.

  • US: /kɒɡˈnoʊ.mən/
  • US: Recorded audio is listed in the source snapshot.

1

noun

Meaning 1

A personal epithet or clan name added to the given name and family name of Ancient Romans.

Definition source: English Wiktionary via Wiktextract

Usage: historical

Examples

  • Julius Caesar's actual name was Gaius Iulius Caesar. Gaius was his praenomen or forename, Iulius his nomen or surname, and Caesar his cognomen, denoting which part of the Iulius family he belonged to.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

Synonym of nickname, any epithet used similar to the Roman cognomina.

Definition source: English Wiktionary via Wiktextract

Usage: humorous, literary

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: nickname, any epithet used similar to the Roman cognomina

Antonyms: none provided

3

noun

Meaning 3

Synonym of surname, a family name.

Definition source: English Wiktionary via Wiktextract

Usage: humorous, literary, uncommon

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: surname

Antonyms: none provided

4

noun

Meaning 4

the name used to identify the members of a family (as distinguished from each member's given name)

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: surname, family name, last name

Antonyms: none provided

Broader terms: name

Narrower terms: maiden name

5

noun

Meaning 5

a familiar name for a person (often a shortened version of a person's given name)

Definition source: Princeton WordNet 3.0

Examples

  • Joe's mother would not use his nickname and always called him Joseph
  • Henry's nickname was Slim

Meaning relationships

Synonyms: nickname, moniker, sobriquet, soubriquet, byname

Antonyms: none provided

Broader terms: appellation, denomination, designation, appellative

History

Etymology

From Latin cognōmen, from con- (“with”) + nōmen (“name; family name”).

Across languages

Translations

26 source translations are retained for this English entry.

  • Bulgarian: презиме (prezime) — surname
  • German: Nachname — surname
  • Greek: επώνυμο (epónymo) — surname
  • Greek: επίθετο (epítheto) — surname
  • Italian: cognome — surname
  • Latin: cōgnōmen — surname
  • Macedonian: пре́зиме (prézime) — surname
  • Norwegian Bokmål: etternavn — surname
  • Norwegian Bokmål: familienavn — surname
  • Norwegian Bokmål: slektsnavn — surname
  • Russian: фами́лия (famílija) — surname
  • Ottoman Turkish: لقب (lakab) — surname
  • German: Cognomen — the third part of the name of a citizen of ancient Rome
  • German: Kognomen — the third part of the name of a citizen of ancient Rome
  • Greek: παρωνύμιο (paronýmio) — the third part of the name of a citizen of ancient Rome
  • Greek: επώνυμο (epónymo) — the third part of the name of a citizen of ancient Rome
  • Bulgarian: прякор (prjakor) — nickname
  • Greek: παρατσούκλι (paratsoúkli) — nickname
  • Greek: παρανόμι (paranómi) — nickname
  • Irish: forainm — nickname
  • Italian: cognome — nickname
  • Italian: soprannome — nickname
  • Macedonian: пре́кар (prékar) — nickname
  • Norwegian Bokmål: tilnavn — nickname
  • Norwegian Bokmål: kallenavn — nickname
  • Spanish: cognomen — nickname