| substantial(adjective, material, certain, substantial, real) |
| tangible(adjective, material, certain, substantial, real) |
| real(adjective, material, certain, substantial, real) |
| material(noun, adjective, physical, substantial, actual) |
| significant(adjective, substantial) |
| essential(adjective, physical, material, existence, actual) |
| indispensable(adjective, essential) |
| meaningful(adjective, substantial) |
| palpable(adjective, physical, material, substantial, actual) |
| actual(adjective, material, substantial, real, genuine) |
| solid(adjective, physical, material, substantial, actual) |
| concrete(adjective, material, certain, substantial, real) |
| key |
| necessary |
| noun(noun, nominal) |
| appreciable(adjective, substantial) |
| bodily(adjective, physical, material, substantial, actual) |
| meaty |
| physical(adjective, material, certain, substantial, real) |
| self-sufficient(adjective, free, individual, effort, independent) |