first and foremost
first
ˈfɜ:st
fēst
and
ænd
ānd
fore
fɔ:
faw
most
məʊst
mewst

Definition & Meaning of "first and foremost"in English

first and foremost
01

used to emphasize the most important thing or point before anything else 

Grammatical Information
Examples
First and foremost, I want to thank everyone for their support. 
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