longanimity

from WordNet (r) 3.0 (2006)

longanimity
    n 1: good-natured tolerance of delay or incompetence [syn:
         {patience}, {forbearance}, {longanimity}] [ant:
         {impatience}]

from The Collaborative International Dictionary of English v.0.48

Longanimity \Lon`ga*nim"i*ty\, n. [L. longanimitas; longus long
   + animus mind: cf. F. longanimit['e].]
   Disposition to bear injuries patiently; forbearance;
   patience. --Jer. Taylor.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

34 Moby Thesaurus words for "longanimity":
      acceptance, benevolence, condonation, disregard, endurance,
      forbearance, forbearing, forbearingness, forgiveness,
      forgivingness, fortitude, indulgence, kindness, lenience, leniency,
      long-sufferance, long-suffering, magnanimity, overlooking,
      patience, patience of Job, patientness, perseverance, resignation,
      self-control, stoicism, sufferance, sweet reasonableness,
      tolerance, toleration, uncomplainingness, unrevengefulness,
      waiting game, waiting it out