A way of living, especially a working arrangement to allow for peaceful coexistence between two parties in spite of differences or unresolved disputes. (defdate)
2009, (w), The Case for God, Vintage 2010, p. 53:
The Persians were reviewing the legal systems of the subject peoples to make sure that they were compatible with imperial security, and Ezra had probably worked out a satisfactory modus vivendi between Mosaic and Persian jurisprudence.