| functional(adjective, time, term, duration) |
| functioning(adjective, time, term, duration) |
| imperative(adjective, feature, time, importance) |
| operational(adjective, time, term, duration) |
| operative(adjective, time, term, duration) |
| pressing(adjective, feature, time, importance) |
| timely(adjective, time, term, duration) |
| unstable(adjective, feature, time, importance) |
| up-to-the-minute(adjective, time, term, duration) |
| usable(adjective, time, term, duration) |
| variable(adjective, feature, time, importance) |
| volatile(adjective, feature, time, importance) |
| well-timed(adjective, time, term, duration) |
| appropriate(adjective, time, term, duration) |
| applicable for a short period of time(expression, time, demand, term) |
| as soon as possible(expression, time, demand, term) |
| at the earliest possible juncture(expression, time, demand, term) |
| in a very short time(expression, time, demand, term) |
| relevant for a short period of time(expression, time, demand, term) |
| within short timeframes(expression, time, demand, term) |