He builds castles in the air instead of working.
castle in the air
idiomA desire, idea, or plan that is unlikely to ever be realized; a visionary project or scheme; a daydream, an idle fancy, a near impossibility.
She spends all her time planning a luxury trip she cannot afford, building castles in the air.
The young inventor spent his youth building castles in the air, ignoring the practical limitations that ultimately doomed his ambitious project.
- 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.