| bilateral(adjective, characteristic, duplicity, dual, twoness) |
| binary(adjective, characteristic, duplicity, dual, twoness) |
| dyadic(adjective, characteristic, duplicity, dual, twoness) |
| indistinguishable(adjective, characteristic, duplicity, dual, twoness) |
| paired(adjective, characteristic, duplicity, dual, twoness) |
| repeated(adjective, characteristic, duplicity, dual, twoness) |
| coupled(adjective, characteristic, duplicity, dual, twoness) |
| binal(adjective, characteristic, duplicity, dual, twoness) |
| bipartite(adjective, characteristic, duplicity, dual, twoness) |
| dichotomic(adjective, characteristic, duplicity, dual, twoness) |
| dual(adjective, characteristic, duplicity, twoness) |
| duplex(adjective, characteristic, duplicity, dual, twoness) |
| duplicated(adjective, characteristic, duplicity, dual, twoness) |
| equal(adjective, characteristic, duplicity, dual, twoness) |
| geminate(adjective, characteristic, duplicity, dual, twoness) |
| identic(adjective, characteristic, duplicity, dual, twoness) |
| identical(adjective, characteristic, duplicity, dual, twoness) |
| duple(adjective, characteristic, duplicity, dual, twoness) |
| equivalent(adjective, characteristic, duplicity, dual, twoness) |
| alike(adjective, characteristic, duplicity, dual, twoness) |