| mattering much(expression, significant, substantial, valuable) |
| meaningful(significant, substantial, valuable, vital) |
| momentous(significant, substantial, valuable, vital) |
| of moment(expression, significant, substantial, valuable) |
| of note(expression, significant, substantial, valuable) |
| of substance(expression, significant, substantial, valuable) |
| ponderous(significant, substantial, valuable, vital) |
| primary(significant, substantial, valuable, vital) |
| principal(significant, substantial, valuable, vital) |
| relevant(significant, substantial, valuable, vital) |
| salient(significant, substantial, valuable, vital) |
| serious(hard, tough, important, substantial) |
| significant(adjective, great, important, substantial) |
| something(significant, substantial, valuable, vital) |
| standout(significant, substantial, valuable, vital) |
| vital(adjective, important, significant, substantial) |
| weighty(hard, tough, difficult, significant) |
| exceptional(significant, substantial, valuable, vital) |
| grave(significant, substantial, valuable, vital) |
| substantial(significant, valuable, vital, imperative) |