paired, coupled, matched, linked, joined, united, doubled, duplicated, mirrored, parallel, corresponding, analogous, equivalent, similar, alike, identical, conjoined, associated, connected, twain, dua... [more]
paired, coupled, matched, linked, joined, united, doubled, duplicated, mirrored, parallel, corresponding, analogous, equivalent, similar, alike, identical, conjoined, associated, connected, twain, dua... [more]