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rationale

ra·tion·ale

rationale

 
pronunciation:
rae sh nael
part of speech: noun
definition 1: a fundamental reason for doing or being; basis.
The attack on the naval base provided the rationale for going to war.
synonyms:
base, basis, foundation, grounds, purpose, reason
similar words:
argument, cause, explanation, footing, occasion, pretext, support
definition 2: an argument, statement, or sequence of logical steps amounting to an explanation or justification.
Is there a rationale for this law?
synonyms:
argument, justification, reason, reasoning, warrant
similar words:
case, cause, excuse, explanation, grounds, logic, principle, theory, thesis