deuce
UK[djuːs]US[duːs]
n
the score in tennis when both players have 40 points, after which a player must win two consecutive points to win the game.
n
the two on dice or playing cards.
n
used as a euphemism for 'the devil' in exclamations (e.g., what the deuce?).
Etymology
the word 'deuce' entered english from old french 'deus', meaning 'two', which itself descended from the latin 'duos', the accusative form of 'duo'. this direct lineage explains its core meaning related to the number two, as seen in cards, dice, and the tied tennis score requiring two consecutive points to win. its use as a mild exclamation for 'the devil' (e.g., "what the deuce?") arose in the 17th century, likely from the association of the lowest, unlucky throw of two in dice with misfortune or bad luck, a connection reinforced by the similarity in sound to 'deus' (latin for god) used in opposing oaths.
Analysis
the word is a simplex form. it is a loanword from old french, ultimately from latin.
Examples
the tense match reached deuce several times before the champion finally secured the break.
he rolled a deuce, the lowest possible score, and lost his bet.
"what the deuce is going on here?" he exclaimed in confusion.