Below are possible answers for the crossword clue Fundamental principle.
5 letter answer(s) to fundamental principle
BASIS
a relation that provides the foundation for something; "they were on a friendly footing"; "he worked on an interim basis"
the fundamental assumptions from which something is begun or developed or calculated or explained; "the whole argument rested on a basis of conjecture"
9 letter answer(s) to fundamental principle
RATIONALE
(law) an explanation of the fundamental reasons (especially an explanation of the working of some device in terms of laws of nature); "the rationale for capital punishment"; "the principles of internal-combustion engines"
Reasoning for action
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