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certain

certain

286 1.0
Sure to happen or be true
  • adjective
  • /ˈsɜrtn/
: seguro
  • We can be certain that the sun will rise every morning.
  • certain to occur
  • almost certain
  • seem certain

Death is certain, pain is certain, suffering is certain.

Examples

  • The one thing we can all say for certain is that we could have made it better.

    Academic text (2011)
  • In sum, past energy surprises pale in comparison with those now certain to occur.

    Academic text (1999)
  • To make absolutely certain nothing goes wrong.

  • I have to make certain that you are not armed.

  • Literature within this tradition is certain to remain a major part of the field.

    Academic text (1990)
  • Instead, he remained intransigent, certain that time was on his side.

  • We have certain rights which are inalienable.

  • Each day when it didn't come, she became more certain it never would.

    Fiction book (1990)
  • It's perfectly true that we're born with certain expectations for the world.

  • Joy was minimal, but afterward there was a certain sense of achievement.

    Fiction book (1990)

Synonyms

inevitable
vscertain
318 4.6

Certain to happen and cannot be stopped

covers general guaranteed truth rather than unavoidable fate
sure
vscertain
283 1.0

Certain to happen or be true

is the general statement of guaranteed occurrence
definite
vscertain
157 1.6

Clearly stated or decided and not vague

focuses more on inevitability or guarantee than precision
assured
vscertain
79 3.6

Certain to continue in the future

is the general notion of being presented as sure
beyond doubt
vscertain
74 2.8

Completely certain with no possible reason to think it is wrong

says the same idea but is more general in tone
beyond a doubt
vscertain
55 3.0

Completely sure with no chance of being wrong

expresses the same certainty but in fewer words
undeniable
vscertain
51 4.2

So clear that people cannot doubt it

is similar but may not stress obviousness as much
irrefutable
vscertain
21 7.8

Impossible to deny or prove wrong

is offered as true yet might lack direct proof
indisputable
vscertain
21 5.7

You cannot doubt it because it is clearly true

is stated as guaranteed but can be less absolute
sure-fire
vscertain
13 4.4

Certain to work and bring success

is used more generally for expected truth or result
incontrovertible
vscertain
  • Formal
10 8.2

Clearly true and impossible to doubt

is expressed as definite but may allow rare challenge
unquestionable
vscertain
8 4.1

Clearly true so no one can doubt it

is a broader term for being presented as definite
indubitable
vscertain
  • Formal
1 8.7

Completely certain and clearly true

is used for strong claims but not always absolute
absotively sure
vscertain
  • Informal
1 9.8

Completely certain that something is true

is the standard, neutral expression of guaranteed truth
posilutely certain
vscertain
  • Informal
9.0

Completely sure in a strong, playful way

keeps a neutral guarantee without playful emphasis
positutely sure
vscertain
  • Informal
9.8

Completely certain that something is true

is the straightforward, nonemphatic way to state a guarantee

Antonyms

145 2.8

Not known for sure and likely to change

41 3.9

Not feeling sure or confident

14 3.0

Not sure about something and not ready to believe it

Idioms

86 1.3

To be completely sure and have no doubt

56 2.7

Sure that something is true or will happen

A polite way to talk about someone who is not young, often middle-aged

Compounds

9.0

Completely sure in a strong, playful way

How Certain

inevitable
318 4.6
certain
286 1.0
likely
∞ 1.0
possible
∞ 1.0
doubtful
54 3.0

Surface Forms

certain positive

Etymology

Certain comes from the Latin word certus, meaning 'decided' or 'fixed'. Think of certificate or certify—they make something official and sure—so a 'certain' event is one that is fixed and sure to happen.