IN ADVERSUM

in adversum (in ad-v<<schwa>>r-s<<schwa>>m). [Law Latin] Against an adverse party.

“Where a decree is obtained against one who resists, it is termed ‘a decree not by consent but in adversum.’ ” 1 John Bouvier, Bouvier’s Law Dictionary 1518 (8th ed. 1914).

[Blacks Law 8th]