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B2 Level Wordlist - Certainty and Doubt

Here you will learn some English words about certainty and doubt, such as "ensure", "forecast", "assure", etc. prepared for B2 learners.

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CEFR B2 Vocabulary
to assure
to assure
[Verb]

to make someone feel confident or certain about someone or something

Ex: The company assured its customers of the product's quality 
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to bet
to bet
[Verb]

to express confidence or certainty in something happening or being the case

Ex: I bet it will rain tomorrow because the sky looks very cloudy. 
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to ensure
to ensure
[Verb]

to make sure that something will happen

Ex: She ensures the quality of the products before they are shipped. 
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to forecast

to predict future events, based on analysis of present data and conditions

Ex: Economists forecast a downturn in the stock market due to recent economic indicators. 
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to guarantee

to make sure that something will occur

Ex: The meticulous planning guarantees that the event will run smoothly without any hitches. 
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to hesitate

to pause before saying or doing something because of uncertainty or nervousness

Ex: When asked about the promotion, Sarah hesitated before responding. 
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ought to
ought to
[Verb]

used to talk about what one expects or likes to happen

Ex: He ought to arrive soon; he said he would be here by noon. 
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to recall
to recall
[Verb]

to bring back something from the memory

Ex: She could recall the details of the conversation with remarkable clarity. 
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should
should
[Verb]

used to indicate a degree of expectation regarding something that is likely to happen

Ex: You should expect delays during rush hour traffic. 
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to suspect

to think that something is probably true, especially something bad, without having proof

Ex: I suspect he's been lying about where he was last night. 
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would
would
[Verb]

used to express an opinion about which one is not certain

Ex: She would probably agree with your proposal if you explain it clearly. 
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bound
bound
[Adjective]

likely to happen or sure to experience something

Ex: With the storm approaching, they were bound to face heavy rain and strong winds. 
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sure
sure
[Adjective]

expected or certain to happen

Ex: You're sure to receive excellent service at that restaurant; they pride themselves on customer satisfaction. 
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convinced
convinced
[Adjective]

having a strong belief in something

Ex: After the meeting, she was convinced that the new strategy was the best approach. 
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expected
expected
[Adjective]

anticipated or predicted to happen based on previous knowledge or assumptions

Ex: The students were prepared for the expected test questions after studying the material thoroughly. 
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inevitable
inevitable
[Adjective]

unable to be prevented

Ex: As technology advances, it becomes increasingly inevitable that automation will replace certain jobs. 
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rash
rash
[Adjective]

done without carefully considering what might happen

Ex: He made a rash decision to quit his job without having another one lined up. 
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positive
positive
[Adjective]

(of a person) having no doubt about something

Ex: She was positive that she had left her keys on the kitchen counter. 
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probable
probable
[Adjective]

having a high possibility of happening or being true based on available evidence or circumstances

Ex: With clear skies and no signs of storm, it seems probable that the outdoor event will proceed as planned. 
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uncertain
uncertain
[Adjective]

(of a person) showing a lack of confidence and having doubts about something

Ex: She was uncertain about which job offer to accept, as both had their advantages. 
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unclear
unclear
[Adjective]

not exactly known or expressed, often leading to confusion or ambiguity

Ex: It’s still unclear whether the event will be postponed due to the weather. 
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no doubt
no doubt
[Adverb]

used to say that something is likely to happen or is true

Ex: The quality of her work was excellent, there's no doubt about it. 
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certainty
certainty
[noun]

the state of being sure about something, usually when there is proof

Ex: Her certainty in her ability to complete the marathon came from months of dedicated training. 
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confidence

the belief that one can trust or count on someone or something

Ex: The coach's confidence in the players motivated them to perform at their best during the game. 
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confusion
confusion
[noun]

a state of disorder in which people panic and do not know what to do

Ex: The sudden loud noise caused confusion among the crowd. 
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probability

the likelihood or chance of an event occurring or being true

Ex: The probability of winning the lottery is extremely low. 
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to deceive

to make a person believe something untrue

Ex: He tried to deceive his friends by pretending to be a millionaire. 
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somehow
somehow
[Adverb]

in a way or by some method that is not known or certain

Ex: Somehow, she managed to find her way home in the dark. 
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scheme
scheme
[noun]

a secret plan, particularly one that is made to deceive other people

Ex: The villain's scheme was to steal the treasure without anyone noticing. 
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not necessarily

used usually in a response to show that something may not be true

Ex: Just because someone is wealthy doesn't necessarily mean they're happy. 
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you bet
you bet
[interjection]

used to strongly affirm or agree with a statement

Ex: "This is the best plan we've had." — "You bet it is." 
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to check out

to closely examine to see if someone is suitable or something is true

Ex: The detective will check out the alibi to verify its legitimacy. 
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to [go] back on a (promise|deal|pledge)

to fail to keep or fulfill a commitment or assurance made to someone

Ex: She went back on her promise to help with the charity event. 
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odds
odds
[noun]

the likelihood or probability of something actually taking place

Ex: The odds of winning the grand prize in the raffle are one in a thousand. 
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in stone
in stone
[phrase]

in a way that is not possible to be changed

Ex: The rules of the competition are set in stone, and all participants must adhere to them. 
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to palm off

to dispose of something by giving or selling it to someone else though persuasion or deception

Ex: He tried to palm off a fake painting as the real deal. 
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plastic
plastic
[Adjective]

not seeming real, natural, or genuine

Ex: Her smile seemed plastic, not reaching her eyes. 
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to [go] back on {one's} word

to fail to keep a promise or commitment that was previously made

Ex: He had promised to help me with the project, but he ended up going back on his word. 
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to question

to have or express uncertainty about something

Ex: She questioned the validity of the research findings due to inconsistencies in the data. 
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