Dyslogistic

a. [ Gr. dys- ill, bad, + &unr_; discourse, fr. &unr_; to speak. ] Unfavorable; not commendatory; -- opposed to eulogistic. [ 1913 Webster ]

There is no course of conduct for which dyslogistic or eulogistic epithets may be found. J. F. Stephen. [ 1913 Webster ]

The paternity of dyslogistic -- no bantling, but now almost a centenarian -- is adjudged to that genius of common sense, Jeremy Bentham. Fitzed. Hall. [ 1913 Webster ]

{ } a. [ L. syllogisticus, Gr. &unr_;: cf. F. syllogistique. ] Of or pertaining to a syllogism; consisting of a syllogism, or of the form of reasoning by syllogisms; as, syllogistic arguments or reasoning. [ 1913 Webster ]