Etymology of とんでもない Where did `` (meaning "not at all" or "outrageous!") come from? Could it be ``? ("will not even jump/fly" in a similar way how "When pigs fly" is considered a remark for something outrageous?) Or is there a more complete sentence from which `` was taken out?

Rough extraction/translation from <

Originally from {}, {} meaning "way", "road", "path". Combined with adjective {}, this becomes {} "off the path".