My keys just vanished into thin air.
thin air
idiomAn unknown location; (by extension) apparent disappearance or nonexistence.
The suspect ran around the corner and seemed to disappear into thin air.
The evidence against the defendant did not simply vanish into thin air, but rather was systematically destroyed by those seeking to protect his reputation.
- 01
air one's dirty laundry in public
To reveal one's sordid secrets to the public.
- 02
air one's dirty linen in public
Synonym of air one's dirty laundry in public.
- 03
air out
To expose to air; to leave open or spread out, as to allow odor or moisture to dissipate.
- 04
air rage
Aggressive, disruptive behaviour on an aircraft.
- 05
air sandwich
A strategy that has high-level direction and low-level operations, but little in the middle.
- 06
blow hot air
To engage in empty or exaggerated talk that lacks substance, credibility, or truth; to bluster.
- 07
breath of fresh air
Something relieving, refreshing, or new.
- 08
build castles in the air
To have any desire, idea, or plan that is unlikely to be realized; to imagine visionary projects or schemes; to have an idle fancy or a pipe dream; to daydream.
Last updated April 17, 2026