twenty-four seven
US /ˌtwen.t̬i.fɔːrˈsev.ən/
UK /ˌtwen.t̬i.fɔːrˈsev.ən/
1.
twenty-four hours a day, seven days a week; constantly
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Our customer service is available twenty-four seven.
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He works twenty-four seven to meet deadlines.
1.
available or operating constantly
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The store offers twenty-four seven access to its online catalog.
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We need a twenty-four seven security system for the building.