| renowned(important, significant, substantial, large) |
| salient(significant, substantial, valuable, vital) |
| serious(outstanding, significant, substantial, valuable) |
| solid gold(expression, adjective, important, substantial) |
| something else(expression, adjective, hit, important) |
| standout(outstanding, significant, substantial, valuable) |
| substantial(important, significant, large, valuable) |
| super(important, outstanding, significant, substantial) |
| super-duper(adjective, important, significant, substantial) |
| to the max(expression, adjective, idiom, important) |
| unreal(important, significant, substantial, large) |
| urgent(significant, substantial, valuable, vital) |
| venerable(important, significant, substantial, large) |
| vital(adjective, significant, substantial, valuable) |
| weighty(important, significant, substantial, large) |
| fat(adjective, important, significant, substantial) |
| ponderous(significant, substantial, valuable, vital) |
| chief(significant, substantial, valuable, vital) |
| valuable(significant, substantial, vital, imperative) |