Vocabulary for IELTS (General) - Certainty and Uncertainty

Here you will learn some English words about certainty and uncertainty, such as "confusion", "inevitable", "concrete", etc. that are needed for the IELTS exam.

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to bet

[Verb]

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

Ex: I bet she 's still in bed .

certainty

[noun]

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

Ex: His certainty about the project 's success helped persuade others to invest in it .

confidence

[noun]

the belief in one's own ability to achieve goals and get the desired results

Ex: The team showed great confidence in their strategy during the final match .

confusion

[noun]

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

Ex: The confusion at the airport was due to canceled flights and long lines .

convinced

[Adjective]

(of a person) strongly holding political or religious views

Ex: He became a convinced pacifist after witnessing the horrors of war .

to ensure

[Verb]

to make sure that something will happen

Ex: The captain ensured the safety of the passengers during the storm .

definite

[Adjective]

expressed with clarity and precision, leaving no doubt as to the meaning or intention

Ex: She gave a definite answer about attending the meeting .

to expect

[Verb]

to think or believe that it is possible for something to happen or for someone to do something

Ex: He expects a promotion after all his hard work this year .

to forecast

[Verb]

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

Ex: The financial planner helps clients forecast their future financial needs and goals .

to hesitate

[Verb]

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

Ex: In the heated debate , the politician hesitated before addressing the controversial topic .

inevitable

[Adjective]

unable to be prevented

Ex: With tensions escalating between the two countries , war seemed inevitable.

probability

[noun]

(mathematics) a number representing the chances of something specific happening

Ex: The probability of rolling a six on a fair die is one out of six .

somehow

[Adverb]

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

Ex: Despite the obstacles , they somehow made it to the top of the mountain .

to speculate

[Verb]

to form a theory or opinion about a subject without knowing all the facts

Ex: Neighbors started speculating about the reasons for the sudden increase in security measures .

to suspect

[Verb]

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

Ex: They suspect the company may be hiding some important information .

assured

[Adjective]

displaying confidence in oneself and one's capabilities

Ex: The CEO's assured decision-making skills guided the company through turbulent times with resilience.

concrete

[Adjective]

according to facts instead of opinions

Ex: The success of the project was attributed to concrete planning and meticulous execution .

doubtful

[Adjective]

improbable or unlikely to happen or be the case

Ex: The explanation seems doubtful, considering all the facts .

dubious

[Adjective]

(of a person) unsure or hesitant about the credibility or goodness of something

Ex: They were dubious about his commitment to the team after his repeated absences .

hypothesis

[noun]

an explanation based on limited facts and evidence that is not yet proved to be true

Ex: After analyzing the data , they either confirmed or refuted their initial hypothesis.

paradox

[noun]

a logically contradictory statement that might actually be true

Ex: The famous paradox of Schrödinger 's cat illustrates the complexity of quantum mechanics .

tentatively

[Adverb]

in a way that is not certain or definite and might be changed later

Ex: She tentatively started the project , unsure of its feasibility .

uncertainty

[noun]

a condition or situation that is unsettled, dependent on chance, or unpredictable, often causing doubt

Ex: Rising oil prices created uncertainties in the global economy .

undeniably

[Adverb]

in a way that is definite and cannot be rejected or questioned

Ex: The support from the community was undeniably overwhelming .

confidently

[Adverb]

in a manner that shows strong belief in one's own skills or qualities

Ex: I confidently answered the question , knowing I was correct .

prediction

[noun]

the act of saying what one thinks is going to happen in the future or what the outcome of something will be

Ex: Her bold prediction about the stock market shocked the financial community .

unlikely

[Adjective]

having a low chance of happening or being true

Ex: It 's unlikely that they will finish the project on time given the current progress .

a priori

[Adjective]

using the previous knowledge, reasoning, or general facts to decide the likely result of something

decidedly

[Adverb]

in a way that is certain and beyond any doubt

Ex: The changes in the design were decidedly for the better .

presumption

[noun]

a belief that something is true without any proof

Vocabulary for IELTS (General)
Communication	Art	Music	Literature
Movie and Theater	The Media	Argument and Agreement	Certainty and Uncertainty
Expressing an Opinion	Advice and Suggestion	Making a Decision	Sickness and Health
Cause and Effect	Success and Failure	Education	Space
Money	Business	The environment	Likes and Dislikes

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