on all fours.(Of a law case) squarely on point (with a precedent) on both facts and law; nearly identical in all material ways <our client’s case is on all fours with the Supreme Court’s most recent opinion>. Cf. WHITEHORSE CASE.
“The courts, nowadays, are governed largely by precedent, and this imposes on the advocate the necessity of supporting his client’s cause by concrete authorities — cases ‘on all fours’ with, or at least analogous to, the case at bar.” William M. Lile et al., Brief Making and the Use of Law Books 98 (3d ed. 1914).
[Blacks Law 8th]