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[suhm-dey] /ˈsʌmˌdeɪ/
at an indefinite future time.
Origin of someday
before 900; Middle English sum day, Old English sum dæg; see some, day
Usage note
The adverb someday is written solid: Perhaps someday we will know the truth. The two-word form some day means “a specific but unnamed day”: We will reschedule the meeting for some day when everyone can attend. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for someday
  • The secular cooling that must someday overtake our planet has already gone far indeed with our neighbour.
  • We revel in our my delusion of someday having my own comedy show.
  • Remember, the people you are serving alongside on a committee may someday be voting on your future promotion and tenure.
  • They must have the foresight and the imagination to see that all knowledge in some way, someday, will serve everyone.
  • He had both the ability and the motivation to be published someday.
  • Or start working on a syllabus for some course she might teach someday.
  • Though in their infancy, such tiny robots could someday be enormously useful.
  • someday, changing rockets on the moon may seem as ordinary as switching planes in an airport.
  • Others religiously recycle wine bottles but keep the corks in hopes that someday they will find a way to recycle them as well.
  • She used to have a goldfish, and hopes to get a dog someday.
British Dictionary definitions for someday


at some unspecified time in the (distant) future
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for someday

1898 as one word, from some + day.

Online Etymology Dictionary, © 2010 Douglas Harper
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