Synonyms:
- Janus-like,
- ambidextrous,
- bifacial,
- bifold,
- biform,
- bifurcated,
- bilateral,
- binary,
- binate,
- biparous,
- bipartisan,
- bipartite,
- bivalent,
- conduplicate,
- dichotomous,
- dihedral,
- disomatous,
- double,
- double-faced,
- duadic,
- dual,
- dualistic,
- duple,
- duplex,
- duplicate,
- duplicated,
- dyadic,
- flanked,
- geminate,
- geminated,
- handed,
- identical,
- lateral,
- many-sided,
- matched,
- multilateral,
- one-sided,
- polyhedral,
- quadrilateral,
- second,
- secondary,
- sided,
- tetrahedral,
- three-sided,
- trihedral,
- trilateral,
- triquetrous,
- twain,
- twin,
- twinned,
- two,
- two-faced,
- two-level,
- two-ply,
- two-story,
- twofold,
- unilateral