According to Osho, rationalization is pseudo-reasoning: clever, convenient explanations that disguise your real motives and emotions, protecting the ego while misdirecting blame. It turns anger and fear into justified stories, keeping you unconscious. Drop these pretenses, acknowledge the raw feeling—'I am angry'—and act with awareness; only then can honesty and religiousness (wakefulness) begin.
Rationalization is making smart-sounding excuses to hide what you really feel or why you really did something.