| substantial(adjective, important, significant, large, ample) |
| abundant(significant, large, considerable) |
| momentous(significant, large, considerable) |
| ample(significant, large, considerable) |
| big(significant, large, considerable) |
| bulky(significant, large, considerable) |
| consequential(significant, large, considerable) |
| considerable(significant, large) |
| durable(significant, large, considerable) |
| extensive(significant, large, considerable) |
| extraordinary(significant, large, considerable) |
| firm(significant, large, considerable) |
| generous(significant, large, considerable) |
| goodly(significant, large, considerable) |
| heavy(significant, large, considerable) |
| heavyweight(significant, large, considerable) |
| hefty(significant, large, considerable) |
| key(significant, large, considerable) |
| large(significant, considerable) |
| major-league(significant, large, considerable) |