| exceptional(adjective, sophisticated, leading-edge, higher, pioneering) |
| existing(present, recent) |
| experimental(pioneering, trailblazing) |
| extreme(adjective, sophisticated, leading-edge, higher, pioneering) |
| faddish(leading-edge, in, trendsetting) |
| faddy(leading-edge, in, trendsetting) |
| first(adjective, sophisticated, leading-edge, higher, pioneering) |
| firsthand(adjective, fresh, original, novel, innovative) |
| foremost(adjective, sophisticated, leading-edge, higher, pioneering) |
| forward(adjective, sophisticated, leading-edge, higher, pioneering) |
| futuristic(adjective, radical, progressive, avant-garde) |
| go-go(leading-edge, in, trendsetting) |
| hard by |
| head(pioneering, trailblazing) |
| high-level |
| high-tech(complex, radical, progressive, avant-garde, high-level) |
| higher(adjective, sophisticated, leading-edge, pioneering, trailblazing) |
| highly developed(expression, complex, high-level) |
| hip(pioneering, trailblazing) |
| hottest(adjective, modern, newest) |