| feisty(adjective, solve, decided, resolved) |
| firm of purpose(adjective, ambition, goal, target) |
| flat-footed(adjective, solve, decided, resolved) |
| flat footed(adjective, solve, decided, resolved) |
| focused(adjective, ambition, goal, target) |
| forthright(adjective, solve, decided, resolved) |
| four-square(adjective, stable, stiff, balanced, stead) |
| go-getter(adjective, ambition, goal, target) |
| goal-seeking(adjective, ambition, goal, target) |
| hard(adjective, stable, stiff, balanced, stead) |
| hard-shell(adjective, stable, sure, balanced, standed) |
| hard and fast(adjective, stable, sure, balanced, standed) |
| hard as the nether millstone(adjective, stable, sure, balanced, standed) |
| hard set(adjective, solve, decided, resolved) |
| hardened(adjective, stable, sure, balanced, standed) |
| hardshell(adjective, stable, sure, balanced, standed) |
| immovable(adjective, stable, sure, balanced, standed) |
| imperturbable(adjective, stable, sure, balanced, standed) |
| inconvertible(adjective, stable, stiff, balanced, stead) |
| inexorable(adjective, stable, sure, balanced, standed) |