Mar 9, 2019 · The bird feels the breeze all around it when it's in mid-air. Is it "mid-air", "mid air" or "midair"? I have seen all three of them in various context, so I am not sure if all of them are valid.

Freezing in midair: Much like the second sense of "stop", this implies a longer timeframe and hence a physical impossibility. It certainly doesn't imply "having difficulty keeping that position"; someone "frozen" is understood to be paralyzed and powerless. Staying in midair: A little awkward, but comprehensible.

Harry had never even imagined such a strange and splendid place. It was lit by thousands and thousands of candles that were floating in midair over four long tables, where the rest of the students ...