rationalize

Weed out unwanted or unnecessary things.

Think rationally; employ logic or reason.

“When one wonders why one is doing certain things, one should rationalize”

Structure and run according to rational or scientific principles in order to achieve desired results.

“We rationalized the factory's production and raised profits”

Defend, explain, clear away, or make excuses for by reasoning.

“rationalize the child's seemingly crazy behavior”

“he rationalized his lack of success”

Remove irrational quantities from.

“This function can be rationalized”