| substantial(adjective, reasonable, significant, substantial, large) |
| considerable(adjective, reasonable, significant, substantial, large) |
| tangible(adjective, plain, substantial, real, obvious) |
| apparent(adjective, plain, substantial, obvious, evident) |
| perceptible(adjective, knowledge, substantial, obvious, visible) |
| discernible(adjective, knowledge, substantial, distinct, obvious) |
| noticeable(adjective, knowledge, substantial, large, distinct) |
| significant(adjective, substantial, large, considerable, noticed) |
| material(adjective, significant, substantial, large, considerable) |
| visible(adjective, plain, significant, substantial, obvious) |
| distinguishable(adjective, knowledge, significant, substantial, obvious) |
| estimable(adjective, significant, substantial, worthy, honorable) |
| observable(adjective, knowledge, substantial, obvious, visible) |
| palpable(adjective, knowledge, plain, significant, substantial) |
| sensible(adjective, reasonable, knowledge, significant, substantial) |
| ascertainable(adjective, significant, substantial, considerable, discernible) |
| detectable(adjective, knowledge, significant, substantial, distinct) |
| definite(adjective, plain, significant, substantial, considerable) |
| evident(adjective, significant, substantial, obvious, visible) |
| ponderable(adjective, knowledge, measurement) |