dramatically different Antonyms

two-pronged two twinned transcript pendant paired modular mated kindred isotropic undifferentiated unisonous two-way two-fold suchlike substitutable nonconvergent Siamese twin xerox look-alike blood relative blood relation interchangeable identical identic congeneric complementary commutable collateral collatable coincidental cognate bifold agnate congenerous connate consanguineous homonym homograph dyadic duple dualistic ditto coupled consubstantial conspecific affinal