| hard nosed(adjective, strong-willed, headstrong, businesslike) |
| headstrong(adjective, persistent, stubborn, indomitable) |
| obstinate(adjective, persistent, stubborn, strong-willed, headstrong) |
| persevering(adjective, persistent, stubborn, indomitable) |
| relentless(adjective, persistent, stubborn, indomitable) |
| sharp(adjective, persistent, stubborn, indomitable) |
| tough-minded(adjective, strong-willed, headstrong, businesslike) |
| wilful(adjective, strong-willed, headstrong, businesslike) |
| aspiring(adjective, ambitious, aspirational, high flying) |
| diligent(adjective, persistent, stubborn, indomitable) |
| patient(adjective, persistent, stubborn, indomitable) |
| pensive(adjective, thoughtful, businesslike, ruminant, serious minded) |
| reflective(adjective, thoughtful, businesslike, ruminant, serious minded) |
| strong headed(adjective, strong-willed, headstrong, businesslike) |
| conceited(adjective, ambitious, aspirational, high flying) |
| contrarious(adjective, strong-willed, headstrong, businesslike) |
| cross-grained(adjective, strong-willed, headstrong, businesslike) |
| insightful(adjective, thoughtful, businesslike, ruminant, serious minded) |
| meditative(adjective, thoughtful, businesslike, ruminant, serious minded) |
| arrogant(adjective, ambitious, aspirational, high flying) |