| elaborate(complex, high-level) |
| excellent(adjective, time, sophisticated, manner, higher) |
| exceptional(adjective, time, sophisticated, manner, higher) |
| existing(present, current, modern, up-to-date, recent) |
| experimental(adjective, new, modern, pioneering, trailblazing) |
| extreme(adjective, time, sophisticated, manner, higher) |
| faddish(in, trendsetting) |
| faddy(in, trendsetting) |
| first(adjective, time, sophisticated, manner, higher) |
| foremost(adjective, time, sophisticated, manner, higher) |
| forward(adjective, time, sophisticated, manner, higher) |
| forward-looking(adjective, new, modern, radical, progressive) |
| front-line(adjective, pioneering, trailblazing, cutting-edge) |
| front edge |
| futuristic(adjective, radical, progressive, avant-garde) |
| go-go(in, trendsetting) |
| hard by |
| head(adjective, new, modern, pioneering, trailblazing) |
| high-level |
| high-tech(complex, radical, progressive, avant-garde, high-level) |