Se"ri*ous*ly

Serious \Se"ri*ous\, a. [L. serius: cf. F. s['e]rieux, LL.
   seriosus.]
   1. Grave in manner or disposition; earnest; thoughtful;
      solemn; not light, gay, or volatile.
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            He is always serious, yet there is about his manner
            a graceful ease.                      --Macaulay.
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   2. Really intending what is said; being in earnest; not
      jesting or deceiving. --Beaconsfield.
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   3. Important; weighty; not trifling; grave.
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            The holy Scriptures bring to our ears the most
            serious things in the world.          --Young.
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   4. Hence, giving rise to apprehension; attended with danger;
      as, a serious injury.
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   Syn: Grave; solemn; earnest; sedate; important; weighty. See
        {Grave}.
        [1913 Webster] -- {Se"ri*ous*ly}, adv. --
        {Se"ri*ous*ness}, n.
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103 Moby Thesaurus words for "seriously":
      actively, actually, all joking aside, ardently, assuredly, badly,
      bec et ongles, candidly, certainly, clearly, committedly,
      critically, dangerously, decidedly, decisively, decorously,
      demonstrably, demurely, deplorably, determinedly, devotedly,
      devoutly, down, earnestly, fervently, fervidly, firmly, fixedly,
      for a certainty, for real, formally, gravely, grimly,
      hammer and tongs, heart and soul, heartily, heatedly, honestly,
      impassionedly, in all conscience, in all seriousness, in earnest,
      in good earnest, indeed, indubitably, inflexibly, intensely,
      intently, like a bulldog, like a leech, manifestly, noticeably,
      observably, obstinately, obviously, openly, passionately, patently,
      perfervidly, perseveringly, persistently, positively, purposefully,
      quite, really, relentlessly, resolutely, resolvedly, sedately,
      sensibly, severely, sincerely, singlemindedly, sober-mindedly,
      soberly, sobersidedly, solemnly, somberly, staidly, staunchly,
      steadfastly, steadily, tenaciously, thoughtfully, tooth and nail,
      truly, unambiguously, undeniably, unmistakably, unquestioningly,
      unswervingly, unyieldingly, vehemently, verily, very, vigorously,
      visibly, wholeheartedly, with a will, with constancy,
      with total dedication, without doubt, zealously