\At*tem"per\, v. t. [imp. & p. p. {Attempered}; p. pr.
& vb. n. {Attempering}.] [OF. atemprer, fr. L. attemperare;
ad + temperare to soften, temper. See {Temper}, and cf.
{Attemperate}.]
1. To reduce, modify, or moderate, by mixture; to temper; to
   regulate, as temperature.
         If sweet with bitter . . . were not attempered
         still.                                --Trench.
2. To soften, mollify, or moderate; to soothe; to temper; as,
   to attemper rigid justice with clemency.
3. To mix in just proportion; to regulate; as, a mind well
   attempered with kindness and justice.
4. To accommodate; to make suitable; to adapt.
         Arts . . . attempered to the lyre.    --Pope.
Note: This word is now not much used, the verb temper taking
      its place.