Source : Webster's Revised Unabridged Dictionary (1913)

Uncharitable \Un*char"i*ta*ble\, a.
   Not charitable; contrary to charity; severe in judging;
   harsh; censorious; as, uncharitable opinions or zeal.
   --Addison. -- {Un*char"i*ta*ble*ness}, n. --
   {Un*char"i*ta*bly}, adv.

Source : WordNet®

uncharitable
     adj 1: lacking love and generosity; "all pious words and
            uncharitable deeds"- Charles Reade [ant: {charitable}]
     2: harsh and severe; "I hope I'm not being uncharitable but he
        really is a bore"; "unjust and uncharitable criticism"
        [syn: {unforgiving}]