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bettor (n.)
"one who lays a wager," c. 1600, also better, agent noun from bet (v.). The form is unusual; OED notes that English agent nouns in -er tend to shift toward -or as their senses become more specific; in this case it also might have been done to steer clear of better (n.1) and thus avoid confusion.
updated on October 08, 2022
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Dictionary entries near bettor
Betsy
better
betterment
bettermost
betting
bettor
Betty
Betula
between
betweenity
betweenness