1. (entertainment) derivative, obvious, or amateurish in style; relying on overused techniques or material
   "The film was full of hacky dialogue"
    
2. (esp. computing) inelegant or done hastily without following usual rules or structures
   "The programmer's hacky solution fixed the bug but made the code harder to maintain";
   - kludgy [informal], kludgey [informal]

See also: banal, clichéd, commonplace, hackneyed, old-hat [informal], shop-soiled [Brit], shopworn [N. Amer], stock, threadbare, timeworn, tired, trite, well-worn

Encyclopedia: Hacky