bog/ fen/ marsh/ mire/ morass/ quag/ quagmire/ quicksand/ slough/ sump/ swamp/ wetland
bravery/ daring/ dauntlessness/ gallantry/ intrepidity/ manliness/ undauntedness/ valiantness/ valour/ valorousness
brawn/ breath/ courage/ end/ energy/ extremity/ gut/ heft/ impetus/ inertia/ instant/ life/ might/ moment/ pneuma/ tail/ temper/ tug/ vitality/ zap