out of thin air
US /aʊt əv θɪn ɛr/
UK /aʊt əv θɪn ɛr/

1.
entah dari mana, tiba-tiba
appearing or happening suddenly and unexpectedly, as if from nowhere
:
•
The magician made a rabbit appear out of thin air.
Pesulap membuat kelinci muncul entah dari mana.
•
Ideas don't just come out of thin air; they require effort and thought.
Ide tidak muncul begitu saja; mereka membutuhkan usaha dan pemikiran.