| busy(adjective, feature, work, process) |
| acting(adjective, feature, work, process) |
| active(adjective, feature, work, process) |
| assiduous(adjective, feature, work, process) |
| brisk(adjective, feature, work, process) |
| diligent(adjective, feature, work, process) |
| employed(adjective, feature, work, process) |
| energetic(adjective, feature, work, process) |
| engaged(adjective, feature, work, process) |
| functional(adjective, feature, work, process) |
| functioning(adjective, feature, work, process) |
| fussy(adjective, feature, work, process) |
| laboring(adjective, feature, work, process) |
| meddlesome(adjective, feature, work, process) |
| officious(adjective, feature, work, process) |
| operating(adjective, feature, work, process) |
| operational(adjective, feature, work, process) |
| operative(adjective, feature, work, process) |
| performing(adjective, feature, work, process) |
| practical(adjective, feature, work, process) |