The Suffix -most.
-most suffix (in adjectives) the furthest
southernmost (= the furthest south)
topmost (= the furthest up/nearest to the top)
The suffix -most is also used with adjectives to make new adjectives that mean furthest in a particular direction
– The typhoon passed a group of islands in Okinawa, Japan’s southernmost prefecture, on Tuesday.
The Suffix -most Words
all + most *almost
bottom + most bottommost
eastern + most easternmost
fore + most foremost
further + most furthermost
inner + most innermost
left + most leftmost
northern + most northernmost
rear + most rearmost
outer + most outermost
southern + most southernmost
