Sud"den*ly

Sudden \Sud"den\, a. [OE. sodian, sodein, OF. sodain, sudain, F.
   soudain, L. subitaneus, fr. subitus sudden, that has come
   unexpectedly, p. p. of subire to come on, to steal upon; sub
   under, secretly + ire to go. See {Issue}, and cf.
   {Subitaneous}.]
   1. Happening without previous notice or with very brief
      notice; coming unexpectedly, or without the common
      preparation; immediate; instant; speedy. "O sudden wo!"
      --Chaucer. "For fear of sudden death." --Shak.
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            Sudden fear troubleth thee.           --Job xxii.
                                                  10.
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   2. Hastly prepared or employed; quick; rapid.
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            Never was such a sudden scholar made. --Shak.
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            The apples of Asphaltis, appearing goodly to the
            sudden eye.                           --Milton.
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   3. Hasty; violent; rash; precipitate. [Obs.] --Shak.
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   Syn: Unexpected; unusual; abrupt; unlooked-for.
        [1913 Webster] -- {Sud"den*ly}, adv. -- {Sud"den*ness},
        n.
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58 Moby Thesaurus words for "suddenly":
      a corps perdu, aback, abruptly, all at once, bang, by surprise,
      dash, feverishly, fleetingly, forthwith, hastily, head over heels,
      headfirst, headforemost, headlong, heels over head, hurriedly,
      impetuously, implausibly, improbably, impulsively, in a trice,
      instantaneously, instantly, like a flash, like a thunderbolt,
      momentarily, of a sudden, on short notice, plop, plump, plunk, pop,
      precipitantly, precipitately, precipitously, quickly, rapidly,
      rashly, recklessly, sharp, short, slap, slap-bang, smack, speedily,
      startlingly, sudden, surprisingly, swiftly, unanticipatedly,
      unaware, unawares, unexpectedly, unforeseeably, unpredictably,
      without notice, without warning