| valuable(adjective, significant, substantial, large) |
| determining(significant, substantial, valuable, vital) |
| doozie(important, outstanding, significant, substantial) |
| dynamite(important, significant, substantial, large) |
| exigent(adjective, heavy, significant, substantial) |
| extensive(significant, substantial, large, valuable) |
| fab(important, significant, substantial, large) |
| fat(heavy, important, significant, substantial) |
| forcible(strong, heavy, powerful, substantial) |
| front-page(important, significant, substantial, valuable) |
| importunate(significant, substantial, valuable, vital) |
| life and death(expression, idiom, heavy, important) |
| massive(intense, heavy, powerful, significant) |
| mattering much(expression, significant, substantial, valuable) |
| mondo(important, significant, substantial, large) |
| of note(expression, idiom, importance, significant) |
| of substance(expression, significant, substantial, valuable) |
| ponderous(heavy, significant, substantial, valuable) |
| renowned(important, outstanding, significant, substantial) |
| solid gold(expression, important, significant, substantial) |