lon·ga·nim·i·ty 
(lŏng′gə-nĭmĭ-tē, lông′-)
(lŏng′gə-nĭmĭ-tē, lông′-)n.
Calmness in the face of suffering and adversity; forbearance.
[Middle English longanimite, from Old French, from Late Latin longanimitās, from longanimis, patient : Latin longus, long; see LONGITUDE + Latin animus, mind, reason; see anə- in the Appendix of Indo-European roots.]