| double(adjective, adverb, double, pair, dual) |
| twofold(adjective, adverb, double, duplication, second) |
| doubly(adverb, twofold) |
| dual(adjective, double, second, two, twofold) |
| second(adjective, double, dual, twofold) |
| two times(expression, adjective, idiom, adverb, double) |
| paired(adjective, double, second, dual, two) |
| dualistic(adjective, double, second, dual, two) |
| duplicate(adjective, double, second, dual, twofold) |
| duplex(adjective, double, second, dual, twofold) |
| twin(adjective, double, second, dual, twofold) |
| two(adjective, double) |
| two-fold(adjective, double) |
| binary(adjective, double, second, dual, two) |
| again(adverb, duplication) |
| duple(adjective, double, second, dual, two) |
| bi-form(adjective, double) |
| bifold(adjective, second, dual, two, twofold) |
| bifurcated(adjective, double) |
| bilateral(adjective, double) |