air
airs and graces an affected manner of behaving, designed to attract or impress. British
build castles in the air: seecastle.
clear the air: seeclear.
give yourself airs act pretentiously or snobbishly.
☞ Air in the sense of 'an affected manner' has been current since the mid 17th century; from the early 18th century the plural form has been more usual in this derogatory sense.
1948Christopher BushThe Case of the Second Chance It was said she gave herself airs, and it was also hinted that she was no better-as they say-than she might be.
hot air: seehot.
in the air felt widely or generally to be happening or about to happen.
into (or out of) thin air: seethin.
on (or off) the air being (or not being) broadcast on radio or television.
take the air walk or stroll out of doors.
up in the air (of a plan or issue) still to be settled; unresolved.
2013The Register It's clear that HTML5 is the future, but whether or not that future needs to include DRM is up in the air.
walk on air feel elated.
1977Bernard MacLavertySecrets 'I'm sure you're walking on air,' my mother said to Paul at his wedding.