| massive(significant, large, considerable) |
| material(significant, large, considerable) |
| meaningful(significant, large, considerable) |
| plentiful(significant, large, considerable) |
| principal(significant, large, considerable) |
| serious(significant, large, considerable) |
| significant(large, considerable) |
| sizable(significant, large, considerable) |
| solid(significant, large, considerable) |
| sound(significant, large, considerable) |
| stable(significant, large, considerable) |
| steady(significant, large, considerable) |
| stout(significant, large, considerable) |
| strong(significant, large, considerable) |
| sturdy(significant, large, considerable) |
| superabundant(significant, large, considerable) |
| tidy(significant, large, considerable) |
| valuable(significant, large, considerable) |
| vast(significant, large, considerable) |
| weighty(significant, large, considerable) |