English Explanatory Dictionary

out of the blue

English dictionary entry

Meanings

prep_phrase
  1. Unexpectedly; without warning or preparation.

Pronunciation

/aʊt ɒv ðə bluː/ En-au-out of the blue.ogg

Word forms

out of the blue

Etymology

Short for out of the blue sky, likening an unexpected event to lightning or rain coming suddenly from a cloudless sky.

Related words

bolt from the blue just like that next thing one knows out of nowhere thin air
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