The fact, quality, or state of being certain: the certainty of death. (noun)
Something that is clearly established or assured: "On the field of battle there are no certainties” ( Tom Clancy). (noun)
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.
Use "certainty" in a sentence
"The other, which we call the certainty of adherence, is when the heart doth cleave and stick unto that which it doth believe."
"But the certainty is unfortunately only deceptive."
""The most we can say with certainty is she's definitely comfortable with it ... and definitely family members do," he said."