Green’s Dictionary of Slang

airish adj.¹

[SE put on airs]

(orig. US black)

1. affected, inclined to put on airs.

1943, 1965		in DARE.
1982		W. Safire What’s The Good Word? (1983) 81: airish, inclined to put on airs.

2. effeminate.

1968

in DARE.