Standard Lemma guide

unbirthday

noun · 1 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.

  • Received-Pronunciation: /ʌnˈbɜːθ.deɪ/
  • General-American: /ʌnˈbɝθ.deɪ/
  • Australia: Recorded audio is listed in the source snapshot.

1

noun

Meaning 1

A day that is not one's birthday but is celebrated as though it were.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From un- + birthday, coined by English writer Lewis Carroll (1832–1898) in Through the Looking-Glass (1871).

Across languages

Translations

9 source translations are retained for this English entry.

  • Catalan: no aniversari — Translations
  • Dutch: onverjaardag — Translations
  • French: non-anniversaire — Translations
  • German: Nichtgeburtstag — Translations
  • Italian: non compleanno — Translations
  • Portuguese: desaniversário — Translations
  • Romanian: neaniversare — Translations
  • Russian: день нерожде́ния (denʹ neroždénija) — Translations
  • Spanish: no cumpleaños — Translations