| ecstatic(adjective, happy, perfect, wonderful, cheerful) |
| evaporating(verb, disappearing) |
| fast-paced |
| feverish(adjective, hasty) |
| fleet-footed(adjective, summary, abrupt, unexpected, instant) |
| floating(noun, verb, adjective, happy, high) |
| fugacious(short, brief, temporary, transitory, short-lived) |
| high(adjective, informal, excited, drunk, delighted) |
| impatient(adjective, fast, rapid, hasty, swift) |
| melting(verb, disappearing) |
| mercurial(adjective, fast, quick, velocity, speedy) |
| short-lived(short, brief, summary, abrupt, unexpected) |
| sinking(verb, disappearing) |
| snap(hot, quick, rapid, nimble, speedy) |
| temporary(short, brief, transitory, short-lived) |
| travel(noun, movement, trip, journey) |
| urgent(adjective, hasty) |
| volant(noun, adjective, soaring, floating, aerial) |
| volatile(adjective, short, brief, temporary, transitory) |
| zippy(adjective, urgent) |