most (English) comes from Middle English most, from Old English mǣst, from Proto-Germanic maistaz, from Proto-Germanic mikilaz, from Proto-Indo-European meǵa-.
most (English): superlative degree of much; superlative degree of...
Definitions
superlative degree of much; superlative degree of...
Ancestry of “most”, step by step
most traces back through two separate lines of ancestry.