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

1.
havadan, birdenbire
appearing or happening suddenly and unexpectedly, as if from nowhere
:
•
The magician made a rabbit appear out of thin air.
Sihirbaz bir tavşanı havadan var etti.
•
Ideas don't just come out of thin air; they require effort and thought.
Fikirler havadan gelmez; çaba ve düşünce gerektirirler.