certainty
B2Formal to neutral; common in academic, legal, and everyday contexts.
Definition
Meaning
A fact or state of being completely sure and having no doubt.
A fact or event that is definitely going to happen; an accepted truth.
Linguistics
Semantic Notes
Refers to both the subjective feeling of conviction and the objective quality of being inevitable or proven.
Dialectal Variation
British vs American Usage
Differences
No significant difference in meaning. Slight preference for 'definitely' or 'sure thing' as colloquial alternatives in AmE, but the noun 'certainty' is used identically.
Connotations
Equally formal/informal in both varieties. Often associated with legal, philosophical, and scientific discourse.
Frequency
Comparably frequent in both BrE and AmE corpora.
Vocabulary
Collocations
Grammar
Valency Patterns
There is no certainty that...The certainty of (something)to have/lack certainty aboutwith (a degree of) certaintyVocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “a dead certainty”
- “for a certainty”
- “certainty of death and taxes”
Usage
Context Usage
Business
Used in risk assessment, e.g., 'We cannot proceed with certainty regarding market fluctuations.'
Academic
Central in philosophy and science, e.g., 'Empirical evidence does not provide absolute certainty.'
Everyday
Expressing personal conviction, e.g., 'I can say with certainty that she'll be late.'
Technical
In statistics/probability, denoting an event with a probability of 1.
Examples
By Part of Speech
verb
British English
- No direct verb form. Related: 'to ascertain'.
- The verb 'to certain' is obsolete.
American English
- No direct verb form. Related: 'to certify'.
- We need to certain the facts. (Incorrect usage example)
adverb
British English
- He will certainly be there.
- She certainly knows how to make an entrance.
American English
- That's certainly possible.
- I will certainly call you tomorrow.
adjective
British English
- The certain outcome dampened their spirits.
- She was certain of the route to take.
American English
- He was certain about his decision.
- There's no certain answer to that question.
Examples
By CEFR Level
- I know with certainty that the sun rises in the east.
- He said 'hello' with certainty.
- There's no certainty that the meeting will happen tomorrow.
- She spoke with great certainty about her plans.
- The prosecutor needed to prove the defendant's guilt beyond a reasonable certainty.
- Economic forecasts are made with varying degrees of certainty.
- Philosophical scepticism questions the possibility of attaining any true certainty about the world.
- The treaty brought a measure of certainty to the volatile border situation.
Learning
Memory Aids
Mnemonic
Think of the word 'CERTIFICATE' – a document that provides CERTAINTY about a fact (like a birth certificate).
Conceptual Metaphor
CERTAINTY IS A SOLID OBJECT / FOUNDATION (e.g., 'rock-solid certainty', 'shake someone's certainty').
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid using 'certainty' for 'конкретность' (use 'specificity').
- Not a direct equivalent of 'уверенность' in all contexts – 'confidence' or 'assurance' may fit better for a personal feeling.
- Do not confuse with 'certain' as a determiner (какой-то).
Common Mistakes
- Using 'certanity' (misspelling).
- Using it as a countable noun incorrectly, e.g., 'I have a certainty' (usually 'I have certainty' or 'I have the certainty that...').
- Confusing 'with certainty' (correct) with 'for certainty' (incorrect in standard usage).
Practice
Quiz
Which phrase is a common collocation with 'certainty' meaning something very likely?
FAQ
Frequently Asked Questions
It is usually uncountable (e.g., 'There is no certainty'). It can be countable when referring to specific inevitable facts (e.g., 'Death and taxes are the only certainties in life').
'Certitude' is more formal and often implies a subjective, sometimes unshakable, belief. 'Certainty' is more general and can refer to both subjective conviction and objective fact.
'For a certainty' is an accepted but somewhat old-fashioned or literary idiom, meaning 'definitely'. In modern usage, 'with certainty' or 'for certain' are more common.
In both BrE and AmE, the 't' is pronounced as a clear /t/ sound. In rapid speech, especially in BrE, it may be glottalised or softened, but the standard pronunciation includes the /t/.
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Abstract Thinking
B2 · 49 words · Words for ideas, reasoning and intellectual concepts.
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