apologize vs rationalise

apologize and rationalise both are verbs.

Word	Noun	Adjective	Verb	Adverb
apologize	No	No	Yes	No
rationalise	No	No	Yes	No

As verbs, apologize and rationalise are synonyms defined as:

apologize and rationalise: defend, explain, clear away, or make excuses for by reasoning

Other synonyms of apologize include apologise, excuse, rationalize.

apologize (verb)	rationalise (verb)
acknowledge faults or shortcomings or failing	weed out unwanted or unnecessary things
defend, explain, clear away, or make excuses for by reasoning	remove irrational quantities from
	think rationally; employ logic or reason
	defend, explain, clear away, or make excuses for by reasoning
	structure and run according to rational or scientific principles in order to achieve desired results