Definitions:

1. structure and run according to rational or scientific principles in order to achieve desired results verb
   • We rationalized the factory's production and raised profits
2. To create a reason, explanation, or excuse for something. VERB
   • You can rationalize your way out of anything.
3. To try to find reasons to explain your behavior, decisions, etc. VERB
   • She rationalized the cost by saying that an expensive carpet would last longer than a cheaper one.

Synonyms:

• account for
• attribute
• clear up
• condone
• cut
• excuse
• explain away
• justify
• reason out
• resolve