chief

B2Frequent NGSL-2
UK /tʃiːf/US /tʃiːf/

Meaning

adjective
most important
the chief cause/problem/reason
noun
a person with a high rank or the highest rank in a company or an organization
army/police chiefs

Real video examples

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First, both chief scientists of NVIDIA were from Caltech.

📺 Jensen Huang's Speech at CaltechLearn this word in the video →

Yet, the founder and chief executive officer of the world's largest retailer, whose net sales surpassed 24.5 billion in 2009, is only 46 years old.

📺 Amazon founder and CEO Jeff Bezos delivers graduation speech at Princeton UniversityLearn this word in the video →

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First, both chief scientists of NVIDIA were from Caltech.

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