scheme / plot / design / conspiracy / device / intrigue

obstinate / rigid / strait-laced / stubborn

delicacy

delicacy

set *one's teeth / pertinacity / eagerness / perseverance / endurance / doggedness / take *one's stand / tenacity

set *one's teeth / pertinacity / eagerness / perseverance / attain *one's object / endurance / doggedness / carry through / fight to the last ditch / accomplish *one's original intention / carry out / take *one's stand / tenacity

fighting to the last ditch / tenaciousness / pertinacity / eagerness / dogged / perseverance / persistence / have guts / persevering / pertinacious / having guts / enduring / tenacity / endurance / doggedness / tenacious / carrying *something through to the end / persistent / carry out to the end

safety / security

security

in an at home manner / comfortably / relaxedly / in an at ease manner