grit

[1]

courage , gritrock , gritstone , courageousness , valour , bravery , fortitude , resolution , resoluteness , resolve , toughness , mettle , pluck , spirit , backbone , nerve , gameness , intrepidity/intrepidness , dauntlessness , tenacity , determination , firmness , hardiness , hardihood , staunchness , stalwartness , doughtiness , fearlessness , (Colloq) guts , gutsiness , spunk , spunkiness , starch , (Brit) bottle , (US/Canadian) chutzpah , moxie , stick-to-it-iveness

[2]

backbone , guts , moxie , sand , gumption