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English definition of “first”

first

adjective
 
 
/ˈfɜːst/
BEFORE A1 coming before all others: Who was the first person to arrive at the party? He was nervous on his first day at school. Her first novel didn't sell very well. They went abroad last year for the first time since having children.First and firstly
NUMBER 1st written as a wordFirst and firstlyOrdinal numbers
IMPORTANT A2 most important: Sheila won first prize in the photo competition. → See also in the first placeBeing important and having importance
(Definition of first adjective from the Cambridge Learners Dictionary © Cambridge University Press)
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