incog

The young Pretender, followed by about fifty Scotch and Irish adventurers, meanwhile, came incog.

True, but I learn that she means to make the entire trip incog.

I played at being successful, bought my own pictures through dealers—incog., of course—at enormous prices.

There is a well-known story of an English nobleman, desiring to remain incog.

Present your friend to me, incog., and I'll wager—oh, anything that I shall read her like a book on sight.