outlandish

In olden times, English speakers used the phrase outlandish man to refer to a foreigner - or, one who came from an outland, which originally meant "a foreign land." From here, outlandish broadened in usage from a word meaning "from another land" to one describing something unfamiliar or strange. Dress was a common early target for the adjective - Henry Fielding, in Tom Jones (1749), writes of a woman who was drest in one of your outlandish Garments. Nowadays, the word can be applied to anything that strikes us as out of the ordinary, as in the description of one man’s outlandish proposal to replace the aging Tappan Zee Bridge with a seven-mile tunnel, from the New York Times, September 16, 2001.