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{%type%} Definitions

WordNet 3.0Copyright Princeton University
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Short "hint"

True without a doubt.

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Usage examples (42)
  • If anything is certain, it is that change is certain. The world we are planning for today will not exist in this form tomorrow.
  • He was certain to fail
  • Be certain to disconnect the iron when you are through
  • A quick and certain remedy
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The Open Dictionary of English is a collaborative project, based on Open Source materials, LearnThat resources, and partner APIs.
We give special thanks to our LearnThat volunteers, as well as Princeton University and Wiktionary for their Open Source word data. We're also grateful for the support given by Google, Wordnik.com, Dictionary.com, Stands4.com and YouTube, OEDILF.com, Kylescholz.com, Best-Practice.com, Forvo.com, as well as the generous Creative Commons community.