phrase · 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.
ŭn′dər thē′ ĭ-lo͞o′zhən
Received-Pronunciation:/ˈʌn.də ˌðiː ɪˈluː.ʒən/
Southern-England:Recorded audio is listed in the source snapshot.
Canada, General-American:/ˈʌn.dəɹ ˌði ɪˈlu.ʒən/
US:Recorded audio is listed in the source snapshot.
Australian:/ˈɐn.də ˌðiː ɪˈlʉː.ʒən/
New-Zealand:/ˈɐn.də ˌðiː əˈlʉː.ʒən/
New-Zealand:/ˈɐn.dɐ ˌðiː əˈlʉː.ʒən/
New-Zealand:/ˈɐn.da ˌðiː əˈlʉː.ʒən/
Scotland:/ˈʌn.dəɹ ˌði ɪˈlʉ.ʒən/
India:/ˈən.ɖər ˌd̪iː ɪˈluː.ʒi̯on/
1
phrase
Meaning 1
Having a mistaken belief about something.
Definition source: English Wiktionary via Wiktextract
Usage: idiomatic
No example sentence was provided for this meaning.