twenty-four-seven

from The Collaborative International Dictionary of English v.0.48
twenty-four-seven \twenty-four-seven\ adj. & adv.
   (tw[e^]n"t[=e]f[^o]r-s[e^]v"en) [From 24 hours per day, 7
   days per week.]
   Without interruption; non-stop; continuous; as, the computer
   manufacturer provides 24/7 technical help.

   Syn: 24/7, 7/24
        [PJC]
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