Adverbs of Certainty: English Vocabulary List

in a manner expressing the capability or likelihood of something happening or developing in the future

"This could potentially help you."

"This decision could potentially change your life so think carefully before you make any final choices."

having a low chance of happening or being true

"That is unlikely."

"It is unlikely that she will arrive on time because her flight was delayed by several hours this morning."

in a certain way

"I will definitely call you."

"I will definitely call you later tonight after I finish my homework and eat dinner."

without any uncertainty

"She explained it clearly."

"She clearly explained the rules to everyone so there should be no confusion about what is allowed."

used to express that something might happen or be true

"He could possibly be late."

"He could possibly be the new manager but we have to wait for the official announcement from headquarters."

used to show likelihood or possibility without absolute certainty

"She will probably come."

"They will probably arrive late because of traffic so we should start without them."

used to suggest that there is a strong chance of something happening

"It will most likely rain."

"She will most likely pass the exam because she studied very hard every night this week."

used to say that there is no doubt something is true or is the case

"She is undoubtedly talented."

"She is undoubtedly the best player on the team and everyone agrees with that opinion."

in a manner showing absolute confidence in the statement

"You will surely pass."

"You will surely pass the test if you study hard and review all the material before the exam day."

used to show uncertainty or hesitation

"Maybe we can go."

"Maybe we can go to the cinema tomorrow if you are free and there are good movies playing."

having a low chance of happening or being true

"It is unlikely to rain."

"It is unlikely to snow in April because the weather is already getting warm and sunny."

in an assured manner, leaving no room for doubt

"You can certainly stay here."

"You can certainly stay here for the night if you have nowhere else to go."

used to express that something might happen or be true

"I can possibly help you tomorrow."

"He could possibly be the new manager but we have to wait for the official announcement from headquarters."

used to express possibility or likelihood of something

"Perhaps we should wait."

"Perhaps we should ask the teacher for help because this math problem is really difficult to solve."