DIS- n.
same root as bis twice, and duo, E. two. See Two, and cf. Bi-, Di-, Dia-. Dis- denotes separation, a parting from, as in distribute, disconnect; hence it often has the force of a privative and negative, as in disarm, disoblige, disagree. Also intensive, as in dissever.
DISCRETIVE a.
Marking distinction or separation; disjunctive. Discretive proposition (Logic & Gram.), one that expresses distinction, opposition, or variety, by means of discretive particles, as but, though, yet, etc.; as, travelers change their climate, but not their temper.