I didn't think about the spelling, but now that I am thinking about it, I agree with Known Unknown. "Z" is a much more interesting letter than the ultra-common "S," so I don't want to miss any opportunities to use "z," but is "ditsy" even an acceptable spelling? Was I influenced by "itsy bitsy"? Clearly, there's a noun "ditz" and you'd never think of spelling it "dits."
I Googled "ditsy" and got some indication that it's an acceptable alternate spelling, and I even got the idea it might be the British spelling, but then I looked it up in the Oxford English Dictionary, and it wasn't there at all.
So "ditzy" it is.
The etymology is unknown but it might be a corruption of "dicty." Do you know that word? It's African-American slang for "A black person regarded as snobbish, pretentious, self-important, or ‘stuck-up" or " Snobbish, pretentious, self-important, ‘stuck-up’; having or characterized by aspirations to gentility or elegance; flashy, showy" or "High-class, fancy; elegant, stylish." For example, here's something from 1932: "Harlem's reigning sheik is Cab Calloway... His dicty clothes in zebra patterns set the style pace for ebony swells along Lenox Avenue." And from 1945: "People with slight education, small incomes, and few of the social graces are always referring to the more affluent and successful as ‘dicties’, ‘stuck-ups’, ‘muckti-mucks’, ‘high-toned folks’, ‘tony people.'"
Back to "ditzy." It means "stupid, scatterbrained; ‘cute.'" Why is "cute" in quotations? Anyway, it's mostly said of women. Examples:
1981 Time 12 Jan. 45/1 Bob Newhart plays the President of the United States: Madeline Kahn is his dipso wife, Gilda Radner his ditsy daughter....Ooh! Both examples spelled it "ditsy."
1985 N.Y. Times 31 Jan. a22/2 According to a wholly unscientific sample, this decade's terms [for ‘dumb’] so far include, besides airhead, retard, ditsy and wifty.
"Ditz" is a backformation. It only goes back to 1984.
1985 Guardian 22 June 12/4 Meryl Streep is serious, Suzanne Somers isn't... I've been both. I used to be a ditz. Now I'm talented.Something very 80s about "ditz" and "ditzy." What was going on there? Sexist retrogression after the 60s and 70s?
2007 N. Barker Darkmans 614 ‘I'm a nutter, a ditz, a turd, a ding-bat..' she shrugged.
