rationalise
     v 1: structure and run according to rational or scientific
          principles in order to achieve desired results; "we
          rationalized the factory's production and raised
          profits" syn: rationalize
     2: defend, explain, clear away, or make excuses for by
        reasoning; "rationalize the child's seemingly crazy
        behavior"; "he rationalized his lack of success" syn: apologize,
         apologise, excuse, justify, rationalize
     3: think rationally; employ logic or reason; "when one wonders
        why one is doing certain things, one should rationalize"
        syn: rationalize
     4: remove irrational quantities from; "this function can be
        rationalized" syn: rationalize
     5: weed out unwanted or unnecessary things; "we had to lose
        weight, so we cut the sugar from our diet" syn: cut, prune,
         rationalize
see also:
rationalize apologize apologise excuse justify cut 
prune