| radical(adjective, characteristic, progress, advancement) |
| changeable(adjective, characteristic, change, irregularity) |
| advanced(adjective, characteristic, progress, advancement) |
| avant-garde(adjective, characteristic, progress, advancement) |
| state-of-the-art(adjective, characteristic, progress, advancement) |
| capricious(adjective, characteristic, change, irregularity) |
| dubious(adjective, characteristic, change, irregularity) |
| inconstant(adjective, characteristic, change, irregularity) |
| unreliable(adjective, characteristic, change, irregularity) |
| unstable(adjective, characteristic, change, irregularity) |
| variable(adjective, characteristic, change, irregularity) |
| advancing(adjective, characteristic, progress, advancement) |
| anarchistic(adjective, characteristic, progress, advancement) |
| basal(adjective, characteristic, progress, advancement) |
| basic(adjective, characteristic, progress, advancement) |
| breakthrough(adjective, characteristic, progress, advancement) |
| capital(adjective, characteristic, progress, advancement) |
| central(adjective, characteristic, progress, advancement) |
| chief(adjective, characteristic, progress, advancement) |
| contemporary(adjective, characteristic, progress, advancement) |