Definition of "certain" []

• Definite; fixed: set aside a certain sum each week. (adjective)
• Sure to come or happen; inevitable: certain success. (adjective)
• Established beyond doubt or question; indisputable: What is certain is that every effect must have a cause. (adjective)
• Capable of being relied on; dependable: a quick and certain remedy. (adjective)
• Having or showing confidence; assured. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "However, you should note that many of the compilers (language processors) and commands on the PRIME will make certain assumptions if you follow certain guidelines."
• "[Footnote 1: «qua» is generally used instead of «quae» in the feminine nominative singular and in the neuter nominative and accusative plural.] «485. » «quīdam», _a certain one, a certain_"
• ""I am terrified to say such a thing, but I am certain, quite _certain_, that the ship will be lost within the next few days.""