| importunate(significant, substantial, valuable, vital) |
| marked(significant, substantial, definite, large) |
| massive(heavy, significant, substantial, large) |
| mattering much(expression, significant, substantial, valuable) |
| mondo(important, significant, substantial, large) |
| noteworthy(important, significant, substantial, large) |
| of moment(expression, important, significant, substantial) |
| of note(expression, idiom, importance, significant) |
| of substance(expression, significant, substantial, valuable) |
| ponderous(heavy, significant, substantial, valuable) |
| pressing(significant, substantial, valuable, vital) |
| principal(significant, substantial, large, valuable) |
| renowned(important, significant, substantial, large) |
| salient(importance, significant, substantial, valuable) |
| solid gold(expression, important, significant, substantial) |
| something else(expression, important, significant, substantial) |
| sound(adjective, strong, hard, solid, physical) |
| stable(adjective, strong, hard, solid, physical) |
| standout(significant, substantial, valuable, vital) |
| strong(adjective, hard, solid, important) |