| for real(expression, adjective, thoughtful, sober, serious) |
| go for broke(expression, idiom) |
| hard-as-nails(adjective, determined, serious, resolute, persistent) |
| hardboiled(adjective, determined, serious, resolute, persistent) |
| intense(adjective, deliberate, determined, sober, serious) |
| intent(adjective, intense, deliberate, determined, thoughtful) |
| meaningful(adjective, thoughtful, sober, serious, sincere) |
| never say die(expression, idiom) |
| no-fooling(adjective, determined, thoughtful, sober, serious) |
| obstinate(adjective, intense, deliberate, cruel, determined) |
| on ice(expression, adjective, serious, resolute, persistent) |
| pat(adjective, serious, resolute, persistent, unwavering) |
| persevering(adjective, serious, resolute, persistent, unwavering) |
| persistent(adjective, intense, deliberate, determined, serious) |
| playing hard ball(expression, adjective, idiom, intense, deliberate) |
| purposeful(adjective, determined, serious, resolute, persistent) |
| purposive(intense, deliberate, determined, resolute, focused) |
| resolute(adjective, intense, deliberate, determined, thoughtful) |
| resolved(adjective, thoughtful, sober, serious, resolute) |
| sedate(adjective, thoughtful, sober, serious, sincere) |