| tough(adjective, calm, strong, solid, steady) |
| trim(adjective, great, right, healthy, together) |
| unalterable(adjective, calm, strong, solid, steady) |
| unchangeable(adjective, calm, strong, secure, firm) |
| unflappable(adjective, firm, determined, usual, regular) |
| unfluctuating(adjective, calm, strong, secure, firm) |
| uniform(adjective, calm, strong, secure, firm) |
| unvarying(adjective, calm, strong, secure, firm) |
| unwavering(adjective, calm, strong, secure, firm) |
| up to par(expression, adjective, idiom, strong, great) |
| usual(adjective, firm, determined, regular, planned) |
| well-built(adjective, calm, strong, solid, steady) |
| well-founded(adjective, calm, strong, solid, steady) |
| well-set(adjective, firm, determined, usual, regular) |
| wrapped tight(expression, adjective, strong, great, right) |
| adapted(unassertive, altered, unresisting) |
| all bases covered(expression, idiom, unassertive, altered, unresisting) |
| all set(expression, unassertive, altered, unresisting) |
| all systems go(expression, idiom, unassertive, altered, unresisting) |
| allegiant(adjective, firm, solid, stable, fixed) |