"Incase" is a misspelling of "in case," which is used in preparation for possible future situations. The misspelling "incase" could have come about by people saying the common phrase "in case" too quickly, making some people incorrectly think of it as one word. It also may be because some people were typing too quickly and mistyped the common "in case" as "incase."

Other common misspellings where two words incorrectly are spelled as one include:

  • alot (instead of "a lot")
  • noone (instead of "no one")
  • infact (instead of "in fact")
  • alittle (instead of "a little")

Example sentences

  1. I brought an umbrella in case it rains later.
  2. Always carry some extra cash in case of emergencies.
  3. She packed a snack in case she gets hungry during the journey.
  4. He kept his phone fully charged in case he needed to make a call.
  5. I set an alarm in case I oversleep in the morning.
  6. The meeting might last longer, so I brought my laptop in case I need to work.
  7. She carried a first aid kit in case anyone got hurt on the hike.
  8. I brought an extra jacket in case it gets cold later.
  9. Keep the receipt in case you need to return the item.
  10. I have some reading material with me in case I have to wait.

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Reference:

Definition of IN CASE
as a precaution against the event that; if… See the full definition
in case of something
1. if something happens, or in preparation for when something happens: 2. if…