westernmost (adj.)

"superlative suffix of adjectives and adverbs, Middle English alteration (by influence of unrelated most) of Old English -mest, a double superlative, from -mo, -ma (cognate with Latin -mus; compare Old English forma "first," meduma "midmost") + superlative ending -est. Now generally mistaken as a suffixal form of most."

"向西或来自西方的"，晚期古英语 westerne "西方的，朝西的，来自西方的"，来自 west 和 -erne，表示方向的后缀。名词指"关于旧西部的书或电影"，最早见于1909年。Westerner 自1837年起指"来自美国西部的人"，1880年起指"欧美人"，与东方人相对。