fore ‧ most /ˈfɔːməʊst $ ˈfɔːrmoʊst/ BrE AmE adjective
1 . the best or most important SYN leading , top :
one of the country’s foremost authorities on chemical warfare
Rostropovich was long considered the world’s foremost cellist.
2 . in a leading position among a group of people or things
foremost among/amongst
Sharpton was foremost among the protesters.
Economic concerns are foremost on many voters’ minds.
⇨ first and foremost at ↑ first 2 (10)