IPA: /ˈraɪtˌmoʊst/
KK: /raɪtˌmoʊst/
The position that is farthest to the right side of something.
The rightmost column of the table contains the total scores.
Rightmost → It is formed from "right" (from Old English "riht", meaning correct or true) and "most" (from Old English "mōst", meaning greatest or highest in degree). The word "rightmost" means the furthest to the right or the greatest extent in the right direction.
Think of 'right' meaning correct or true, and 'most' meaning the greatest extent — so 'rightmost' refers to the greatest extent to the right.