v. i. [ imp. & p. p. Militated p. pr. & vb. n. Militating ] [ L. militare, militatum, to be a soldier, fr. miles, militis, soldier. ] To make war; to fight; to contend; -- usually followed by against and with. [ 1913 Webster ]

These are great questions, where great names militate against each other. Burke. [ 1913 Webster ]

The invisible powers of heaven seemed to militate on the side of the pious emperor. Gibbon. [ 1913 Webster ]

v. t. To argue against; to cast doubt on; -- used in reference to facts which tend to disprove a hypothesis; as, the absence of a correlation of budget deficits with inflation militates against any causal relation between the two. Opposite of support. [ PJC ]