| stalwart(intense, deliberate, determined, resolute, focused) |
| staunch(intense, deliberate, determined, resolute, focused) |
| steadfast(intense, deliberate, determined, resolute, focused) |
| steady(adjective, intense, deliberate, determined, thoughtful) |
| strictly business(expression, adjective, great, tough, severe) |
| strong-willed(intense, deliberate, determined, resolute, focused) |
| telelogical(intense, deliberate, determined, resolute, focused) |
| tenacious(intense, deliberate, determined, resolute, focused) |
| tough(adjective, severe, difficult, important, significant) |
| ugly(severe, weighty, aper, demoniac, crucial) |
| unamusing(adjective, tough, severe, important, significant) |
| undeviating(intense, deliberate, determined, resolute, focused) |
| unfaltering(intense, deliberate, determined, resolute, focused) |
| unhumorous(adjective, tough, severe, important, deep) |
| unwavering(intense, deliberate, determined, resolute, focused) |
| weighty(adjective, tough, severe, deep, thoughtful) |
| worrying(adjective, tough, severe, important, significant) |
| annihilative(aper, demoniac) |
| aper(adjective, destructive, demoniac, annihilative) |
| big-league(great, heavy) |