An adjective used, as far as I know, only by my wife's mother, to describe a sudden sensation of coolness or a quick drop in temperature. Almost always preceded by the adverb mite. Example: I think I'll put my sweater on. It's getting a mite airishable all of a sudden.
AIRISHABLE
Meaning of AIRISHABLE in English
Slang English vocab. Английский сленговый словарь. 2012