D defs.my
Entry 1 sense Webster, 1913

Sororize

· So·ro·rize · IPA /ˈsɒɹəɹaɪz/
01 v. i. To associate, or hold fellowship, as sisters; to have sisterly feelings; -- analogous to fraternize.
  1. 1.
    To associate, or hold fellowship, as sisters; to have sisterly feelings; -- analogous to fraternize.[Recent & R.]