| acceptable(adjective, stable, defended, verbal attack) |
| admissible(adjective, stable, defended, verbal attack) |
| reasonable(adjective, stable, defended, verbal attack) |
| sensible(adjective, stable, defended, verbal attack) |
| allowable(adjective, stable, defended, verbal attack) |
| legitimate(adjective, stable, defended, verbal attack) |
| passable(adjective, stable, defended, verbal attack) |
| provable(adjective, stable, defended, verbal attack) |
| rational(adjective, stable, defended, verbal attack) |
| unobjectionable(adjective, stable, defended, verbal attack) |
| verifiable(adjective, stable, defended, verbal attack) |
| viable(adjective, stable, defended, verbal attack) |
| sustainability(adjective, true, real, poise, stability) |
| defensible(adjective, stable) |
| empirical(adjective, stable) |
| justifiable(adjective, stable) |
| livable(adjective, stable) |
| permissible(adjective, stable) |
| real deal |
| warrantable(adjective, defended, verbal attack) |