| suddenly(adverb, unexpectedly, unawares, abruptly, ignorantly) |
| short(adverb, quickly, suddenly, unexpectedly, unawares) |
| unexpectedly(adverb, suddenly, unawares, abruptly, astonishingly) |
| abruptly(adverb, suddenly, unexpectedly, unawares, astonishingly) |
| hastily(adverb, quick, rapidly) |
| sudden(adjective, adverb, extraordinary, wonderful, suddenly) |
| surprisingly(adverb, suddenly, unexpectedly, unawares, ignorantly) |
| all at once(expression, idiom, adverb, quickly, unexpectedly) |
| bang |
| out of the blue(expression, adjective, idiom, wonderful, sudden) |
| plump |
| precipitately |
| accelerated(adjective, sudden) |
| acute(adjective, sudden) |
| brash(adjective, sudden) |
| by surprise(expression, adverb, suddenly, unexpectedly, unawares) |
| extraordinary(adjective, wonderful, shocking, astonishing, astounding) |
| fast(adjective, violent, quick, sudden, soon) |
| hasty(adjective, violent, fast, quick, sudden) |
| headlong(adjective, violent, fast, quick, sudden) |