| effective(adjective, strong, power, active, valid) |
| efficacious(adjective, strong, power, effective, valid) |
| functional(adjective, active, useful, real, practical) |
| effectual(adjective, strong, power, effective, valid) |
| efficient(adjective, strong, direct, energetic, lively) |
| working(adjective, action, energetic, lively, active) |
| agent(noun, person, plant, investigate, agent) |
| hand(noun, person, work, agent, member) |
| operational(adjective, active, practical, effective, running) |
| active(adjective, action, movement, direct, moving) |
| artisan(noun, agent, hand, worker, employee) |
| serviceable(adjective, direct, active, useful, valuable) |
| functioning(adjective, action, active, awareness, effective) |
| running(verb, adjective, action, active, awareness) |
| in force(expression, adjective, idiom, strong, power) |
| usable(adjective, free, friendly, appropriate, active) |
| alive(adjective, action, moving, active, animate) |
| operating(adjective, action, moving, active, awareness) |
| secret agent(noun, expression, idiom, plant, agent) |
| worker(noun, person, work, representative, assistant) |