fundamental adjective - definition in Learners Dictionary

fundamental

/ˌfʌndəˈment^əl/ adjective

› relating to the most important or main part of something:

a fundamental change/difference

Training is fundamental to success.

fundamentally adverb

›

The world has changed fundamentally over the last century.

(Definition of fundamental adjective from the Cambridge Learner's Dictionary © Cambridge University Press)

worried or nervous about something that is going to happen

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