certainty
5 synonyms and 0 antonyms for certainty, grouped by meaning and by how common each one is.
Noun — The state of being completely sure about something.
Synonyms
Everyday swaps
Common words most readers know — safe in any writing.
Less common
Still standard English, but they carry more weight.
Rare, literary or technical
Precise, but they will stand out — check the sense before using one.
How to use certainty
The word patterns that sound natural to a native speaker.
Etymology
From Middle English certeynte (“surety”), from Anglo-Norman certeinte, from Old French certeinete, from Vulgar Latin *certānitās, from Latin certus.
Full origin of certainty →Frequently asked questions
What does “certainty” mean?
The word “certainty” means the state of being completely sure about something. In plain terms, total confidence that something is true, or a fact/outcome that is beyond doubt.
How do you pronounce “certainty”?
“Certainty” is pronounced SURTN-tee (/ˈsɝtn̩ti/ in IPA).
How do you use “certainty” in a sentence?
Here is “certainty” used in a sentence: “He spoke with total certainty about the results.”
What part of speech is “certainty”?
“Certainty” is a noun.
Is “certainty” a common word?
“Certainty” is a fairly common word in modern English, usually learned at around the B1 level.
How many meanings does “certainty” have?
“Certainty” has 2 distinct senses listed in this dictionary. The most common is: the state of being completely sure about something.
What is the difference between certainty and certitude?
Certainty describes the objective state of being sure about something or a fact that is definitely true. Certitude leans more toward a strong personal feeling of conviction, which may or may not match objective fact.
What is the difference between certainty and probability?
Certainty means something is sure to happen or definitely true, with no doubt involved. Probability describes a degree of likelihood that falls short of certainty.
How is certainty different from the adjective certain?
Certainty is the noun naming the state or quality of being sure, as in 'speak with certainty.' Certain is the adjective used to describe a person, fact, or outcome, as in 'she is certain.'