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

Changeful \Change"ful\, a.
   Full of change; mutable; inconstant; fickle; uncertain.
   --Pope.

         His course had been changeful.           --Motley.
   -- {Change"ful*ly}, adv. -- {Change"ful*ness}, n.

资料来源 : WordNet®

changefulness
     n : the quality of being changeable and variable [syn: {inconstancy}]
         [ant: {constancy}]