| live(adjective, active, occupied, running, alive) |
| moving(adjective, running, alive, functioning, operational) |
| obliged(adjective, working, available) |
| obliging(considerate, responsive, helpful) |
| on the stick(expression, adjective, idiom, alert, aware) |
| on top of(expression, idiom, adverb, sharp, alive) |
| on your guard(expression, idiom, alert, attentive, watchful) |
| on your toes(expression, idiom, alert, aware, clued-in) |
| operational(running, functioning) |
| operative(adjective, running, alive, functioning, operational) |
| paying attention(expression, adverb, sharp, alive, listening) |
| polite(considerate, responsive, helpful) |
| preoccupied(adjective, considerate, responsive, aware, helpful) |
| punched in(expression, adjective, working, available, obliged) |
| responsive(considerate, helpful) |
| retained |
| running(adjective, alive, functioning, operational) |
| studious(adjective, considerate, responsive, aware, helpful) |
| useful(adjective, active, occupied, running, alive) |
| vital(adverb, sharp, alive) |