One of the definitions Merriam-Webster gives for the verb 'air':

to allow air from the outside to enter something (such as a room) so that it becomes fresher or cleaner

How common is this verb in (obviously colloquial) AmE speech? If it's not, what is the most common expression or verb?

My guess would be just 'let some fresh air in'.

  • I'd say fairly common. You'd say "air out this room" when the windows aren't open for example
    – user180089
    Jul 30 '16 at 0:53
  • 1
    We often will open a window to air out the room. While i’m not fond of it several of my friends will air up their tires before going on a ride (bicycles) and at lunch people may air their grievances or their dirty laundry.
    – Jim
    Jul 30 '16 at 0:54
  • also, air out the house, the cabin the car... Jul 30 '16 at 1:07
  • You mean like to "air your dirty laundry"?
    – Hot Licks
    Jul 30 '16 at 2:50
  • @HotLicks what does that even mean? Jul 30 '16 at 3:41

M-W says of this meaning of air: "often used with out" and provides this example sentence:

She opened the windows to air the room.

I would not use the verb air without out, so the sentence above would not be one that I would say.

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