| of moment(expression, important, significant, substantial) |
| of note(expression, significant, substantial, valuable) |
| of substance(expression, significant, substantial, valuable) |
| ponderous(dull, quiet, heavy, significant) |
| pressing(severe, significant, substantial, valuable) |
| primary(important, significant, substantial, serious) |
| principal(great, important, substantial, large) |
| renowned(important, significant, substantial, large) |
| salient(significant, substantial, valuable, vital) |
| sedate(adjective, dull, quiet, severe) |
| solid gold(expression, important, significant, substantial) |
| somber(adjective, dull, quiet, severe) |
| something else(expression, adjective, unusual, important) |
| stable(adjective, strong, solid, important) |
| staid(adjective, dull, quiet, severe) |
| standout(outstanding, significant, substantial, valuable) |
| steady(adjective, strong, solid, important) |
| super(adjective, good, unusual, important) |
| super-duper(important, significant, substantial, large) |
| to the max(expression, idiom, important, substantial) |