Antonym: doubt, mistrust, uncertainty. Similar words: uncertainty, uncertainty principle, certain, for certain, ascertain, uncertain, certainly, certainly not. Meaning: ['sɜːtntɪ] 
n. 1. the state of being certain 2. something that is certain.
n. 1. the state of being certain 2. something that is certain. 
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31, That is a certainty.
32, I can't say with certainty what project they are engaged in.
33, There is no certainty that the president's removal would end the civil war.
34, I can't say with any certainty where I shall be next week.
35, There seems to be a lack of certainty over what we should do.
36, Such attitudes are valueless unless they reflect inner cognition and certainty.
37, The result is impossible to predict with any degree of certainty .
38, I know with certainty.
39, He usually does quite well, but it's not a certainty.
40, Mary spoke with blithe certainty about her future.
41, He knew it for a certainty.
42, A high degree of certainty permits a high structure.
43, An absolute certainty that no-one wishes you harm.
44, Further job cutbacks are a certainty.
45, Creggan suddenly felt strength and great certainty.
46, She moves with strength(Sentencedict.com), with certainty.
47, Their discussions, though flushed with certainty, did not clarify.
48, Doubt is uncomfortable, certainty is ridiculous.sentencedict .com Voltaire 
49, The momentary pause had turned suspicion into certainty.
50, I remember that I felt astonished at her certainty.
51, He had to have absolute certainty.
52, Rather, what matters is the certainty of supply schedules.
53, He felt it was a certainty.
54, Science can not provide that kind of certainty.
55, In Barcelona, gold seemed a certainty.
56, He felt the certainty of it.
57, There was absolute certainty in his voice.
58, Within those areas covered by the rational basis part of the test there would be greater certainty.
59, He was not saying merely that you believed it, but that you could know it as certainty!
60, On the other hand, we can never possess such a certainty that some one loves us.
More similar words: uncertainty, uncertainty principle, certain, for certain, ascertain, uncertain, certainly, certainly not, pertain, appertain, entertain, entertained, entertaining, entertainment, curtain, dainty, maintain, iron curtain, suzerainty, taint, tainted, untainted, curtail, pointy, flinty, curtailment, overtake, stain, water tank, undertake.