dit·zy adjective ordit·sy\ˈditsē\ (-er/-est) Etymology: origin unknown 1.: eccentrically silly, giddy, or inane : dizzy < the ditzy but nice blond who may deserve the guy but seldom gets him — Rebecca Bricker > 2.: overly decorative : fussy < a ditzy pattern > • dit·zi·nessordit·si·ness\-nə̇s\