| boundary(noun, adjective, characteristic, border, transitivity) |
| threshold(noun, adjective, characteristic, border, transitivity) |
| initial(adjective, characteristic, border, transitivity) |
| transitional(adjective, characteristic, border, transitivity) |
| borderline(adjective, characteristic, border, transitivity) |
| marginal(adjective, characteristic, border, transitivity) |
| bordering(adjective, characteristic, border, transitivity) |
| interjacent(adjective, characteristic, border, transitivity) |
| transition(adjective, characteristic, border, transitivity) |
| transitive(adjective, characteristic, border, transitivity) |
| frontier(adjective, characteristic, border, transitivity) |
| terminal(adjective, characteristic, border, transitivity) |
| in-between(adjective, characteristic, border, transitivity) |
| transitory(adjective, characteristic, border, transitivity) |
| interim(adjective, characteristic, border, transitivity) |
| intermediary(adjective, characteristic, border, transitivity) |
| intermediate(adjective, characteristic, border, transitivity) |
| interstitial(adjective, characteristic, border, transitivity) |
| medium(adjective, characteristic, border, transitivity) |
| primary(adjective, characteristic, border, transitivity) |