| functional(adjective, use, function, useful, working) |
| adaptive(adjective, power, ability, useful, working) |
| useful(adjective, adaptive, work, working, efficient) |
| usable(adjective, work, feature, state, function) |
| operational(adjective, feature, state, work, useful) |
| operating(adjective, work, feature, state, function) |
| operative(adjective, work, feature, state, useful) |
| serviceable(adjective, work, feature, state, useful) |
| active(adjective, feature, state, work, useful) |
| handy(adjective, feature, state, work, useful) |
| working(adjective, work, feature, state, function) |
| effective(adjective, work, feature, state, function) |
| functioning(adjective, work, feature, state, function) |
| practical(adjective, work, feature, state, function) |
| running(adjective, work, feature, state, function) |
| operable(adjective, feature, state, work, useful) |
| practicable(adjective, feature, state, work) |
| capable(adjective, power, ability, useful, working) |
| dynamic(adjective, power, ability, useful, working) |
| utility(adjective, work, function, useful, working) |