Definition of have or keep one's wits about one in English:

have (or keep) one's wits about one

Be constantly alert: a signalman had to have his wits about him keep your wits about you or you’ll forget something important
More example sentences
  • The only thing I can do is keep my wits about me and stay alert, you know?
  • He added: ‘I suppose it was fortunate that I kept my wits about me.’
  • I panicked and, although it would be ridiculous to die of exposure in Norfolk, I could have done if I had not kept my wits about me.
See parent entry: wit

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Word of the day apposite
Pronunciation: ˈapəzɪt
adjective
apt in the circumstances or relation to something