Definition of rationalise

• structure and run according to rational or scientific principles in order to achieve desired results; "We rationalized the factorys production and raised profits"
• defend, explain, clear away, or make excuses for by reasoning; "rationalize the childs seemingly crazy behavior"; "he rationalized his lack of success"
• think rationally; employ logic or reason; "When one wonders why one is doing certain things, one should rationalize"