seriousness
  嚴肅,認真
  Se·ri·ous a.
  1. Grave in manner or disposition; earnest; thoughtful; solemn; not light, gay, or volatile.
     He is always serious, yet there is about his manner a graceful ease.   --Macaulay.
  2. Really intending what is said; being in earnest; not jesting or deceiving.
  3. Important; weighty; not trifling; grave.
     The holy Scriptures bring to our ears the most serious things in the world.   --Young.
  4. Hence, giving rise to apprehension; attended with danger; as, a serious injury.
  Syn: -- Grave; solemn; earnest; sedate; important; weighty. See Grave.
  -- Se*ri*ous*ly, adv. -- Se*ri*ous*ness, n.
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  seriousness
       n 1: an earnest and sincere feeling [syn: earnestness, sincerity]
       2: the quality of arousing fear or distress; "he learned the
          seriousness of his illness" [syn: distressfulness]
       3: the trait of being serious; "a lack of solemnity is not
          necessarily a lack of seriousness"- Robert Rice [syn: earnestness,
           serious-mindedness, sincerity] [ant: frivolity]