fundamental
noun/ˌfʌndəˈmentl/
/ˌfʌndəˈmentl/
[usually plural]- a basic rule or principle; an essential part
- the fundamentals of modern physics
- He taught me the fundamentals of the job.
Word Originlate Middle English: from French fondamental, or late Latin fundamentalis, from Latin fundamentum, from fundare ‘to found’.Definitions on the go
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fundamental