Definition of "clear-headedness" []

• The state of being clear-headed (noun)

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• "Where the Wales coaches have changed mindsets, with the players having opted to avoid alchohol last week to ensure their clear-headedness in Cardiff, England are in danger of disappearing up a familiar blind alley."
• "Liz Whittingham, the first archivist at the Roald Dahl Museum and Story Centre, also helped get me started on the book, but I could not have completed it without the kindness, industry, clear-headedness and generosity of her successor, Jane Branfield."
• "Rubashov would occasionally become conscious of this in his rare moments of clear-headedness, and he would then have the sensation of awakening from a strange state of intoxication; Gletkin, on the other hand, seemed never to be aware of it."