Try looking on an online dictionary or thesarus antonyms (opposites).
To find the antonym for the word "rationalize," we can break down the word and understand its meaning. "Rationalize" refers to the act of justifying or explaining one's actions, decisions, or beliefs in a logical or reasonable manner. The prefix "anti-" means against or opposite. Therefore, an antonym for "rationalize" would be "irrationalize" or "irrational." These terms denote the absence of logical reasoning or justification for actions, decisions, or beliefs. To clarify if there are any other possible antonyms, it is recommended to consult a reliable dictionary or thesaurus.
