foremost

1 foremost /ˈfoɚˌmoʊst/ adjective
1 foremost
/ˈfoɚˌmoʊst/
adjective
Britannica Dictionary definition of FOREMOST
: most important
2 foremost /ˈfoɚˌmoʊst/ adverb
2 foremost
/ˈfoɚˌmoʊst/
adverb
Britannica Dictionary definition of FOREMOST
1 
: in the first or most important position
2 
: at the most basic or important level

first and foremost

— see 2first