1fore·most 
/ˈfoɚˌmoʊst/ adjective
/ˈfoɚˌmoʊst/ adjective : most important
▪ He is the foremost [=leading] authority/scholar on the American Civil War period. ▪ Safety is their foremost [=primary] concern.
▪ He is the foremost [=leading] authority/scholar on the American Civil War period. ▪ Safety is their foremost [=primary] concern.
