| immersion(noun, mind, interest, notice, attention) |
| indefatigableness |
| inflexibility(noun, resolve, determination, firmness, persistence) |
| insistence(noun, resolve, determination, resolution, firmness) |
| intensity(noun, activity, passion, spirit, care) |
| intent(noun, activity, care, application, perseverance) |
| intentiveness |
| interest(noun, trouble, regard, concern, notice) |
| mail coach(expression, idiom, vehicle) |
| moxie(noun, resolve, restraint, determination, resolution) |
| obduracy(noun, resolve, determination, firmness, persistence) |
| omnibus |
| pain(noun, care, conscientiousness, assiduousness, meticulousness) |
| preciseness(noun, fastidiousness, vigilance) |
| purposefulness(noun, determination, resolution, endurance, persistence) |
| remark |
| sand(noun, resolution) |
| scrupulousness(noun, trouble, regard, concern, care) |
| single-mindedness(noun, concentration) |
| sophrosyne(noun, caution, carefulness, forethought, farsightedness) |