Source : Webster's Revised Unabridged Dictionary (1913)

Lenience \Le"ni*ence\ (l[=e]"n[i^]*ens or l[=e]n"yens; 106),
Leniency \Le"ni*en*cy\ (l[=e]"n[i^]*en*s[y^] or
   l[=e]n"yen*s[y^]), n.
   The quality or state of being lenient; lenity; clemency.

Source : WordNet®

leniency
     n 1: mercifulness as a consequence of being lenient or tolerant
          [syn: {lenience}, {mildness}, {lenity}]
     2: a disposition to yield to the wishes of someone; "too much
        indulgence spoils a child" [syn: {indulgence}, {lenience}]
     3: lightening a penalty or excusing from a chore by judges or
        parents or teachers [syn: {lenience}]