Standard Lemma guide

undie

noun · verb · 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

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.

  • /ˈʌndi/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • homophone: undy
  • rhymes with -ʌndi
  • /ʌnˈdaɪ̯/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • rhymes with -aɪ

1

noun

Meaning 1

Underwear.

Definition source: English Wiktionary via Wiktextract

Usage: attributive, informal, often

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

A spy, undercover agent.

Definition source: English Wiktionary via Wiktextract

Usage: informal

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

verb

Meaning 3

To come back to life after having died.

Definition source: English Wiktionary via Wiktextract

Usage: intransitive

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

verb

Meaning 4

To become undead.

Definition source: English Wiktionary via Wiktextract

Usage: intransitive

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From undies.

From undercover.

From un- + die.