资料来源 : Webster's Revised Unabridged Dictionary (1913)

Peaceful \Peace"ful\, a.
   1. Possessing or enjoying peace; not disturbed by war,
      tumult, agitation, anxiety, or commotion; quiet; tranquil;
      as, a peaceful time; a peaceful country; a peaceful end.

   2. Not disposed or tending to war, tumult or agitation;
      pacific; mild; calm; peaceable; as, peaceful words.

   Syn: See {Peaceable}. --{Peace"ful*ly}, adv.. --
        {Peace"ful*ness}, n.

资料来源 : WordNet®

peacefulness
     n 1: a state that is calm and tranquil [syn: {peaceableness}]
     2: the absence of mental stress or anxiety [syn: {peace}, {peace
        of mind}, {repose}, {serenity}, {heartsease}, {ataraxis}]