doozy /ˈduːzi/adjective 2noun 1forms 3 adjective2 •(slang, old-fashioned) Of high quality; remarkable; excellent.As soon as the races were billed he began to evolve Schemes — one Doozy scheme followed the other... — 1903 •(slang, old-fashioned) Sporty, ostentatious, flashy.Who was that doozy fellow I saw you with? — 1917 noun1 •(US, informal) Something that is extraordinary: often troublesome, difficult or problematic, but sometimes extraordinary in a positive sense.Most of the test was easy, but the last question was a doozy. formsdoozies · doozier · dooziest