Irrecognizable

He went to the flat of one of his schoolfellows and came out, an hour later, irrecognizable, rigged out as an Englishman of thirty, in a brown check suit, with knickerbockers, woolen stockings and a cap, a high-colored complexion and a red wig.

The immortal gods are there (quite irrecognizable under these disguises), and also the lowest broken valets.

[T]here remains no trace of their having ever existed—outside of course of the family names which are now preserved, though some of them in an almost irrecognizable form.

The loamy ground on which I lay, the scattered fragments of the cairn beside me, and the rocks and junipers, were irrecognizable as if they had belonged to some other planet than ours.