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certain

certain

840 1.0
Feeling sure and having no doubt
  • adjective
  • /ˈsɜrtn/
translation icon : seguro
  • I left for Oxford, certain I would go on to law school.
  • feel certain
  • less certain

And I really, I'm certain you do this.

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Examples

Synonyms

sure
vscertain
1.0

Feeling no doubt about something

is a general steady feeling of trust in a belief
confident
vscertain
715 2.5

Feeling sure about yourself or what will happen

is more about calm general trust than active self-assurance
convinced
vscertain
466 2.8

Feeling sure that something is true

is broader everyday confidence rather than focused firm belief
sure as shooting
vscertain
  • Informal
1 8.2

Completely certain that something will happen

is ordinary confidence without the strong idiomatic punch
never in doubt
vscertain
1 6.8

Being completely sure about something even when you are wrong

is justified confidence tied to reasonable lack of doubt
sure as sugar
vscertain
  • Informal
1 8.8

Certain to happen without any doubt

is plain confidence without the whimsical or rhyming style
assured
vscertain
4.1

Confident and steady in voice or movement

is a more basic feeling of trust without notable poise
absotively sure
vscertain
  • Informal
9.8

Completely certain that something is true

is normal confidence without the slang or heavy emphasis
posilutely certain
vscertain
  • Informal
9.0

Completely sure in a strong, playful way

is regular steady confidence without theatrical emphasis
positutely sure
vscertain
  • Informal
9.8

Completely certain that something is true

is everyday surety without the exaggerated finality
supersecure
vscertain
6.1

Very sure about something without any doubt

is typical confidence, not the extreme, all‑clear assurance
sure as the world
vscertain
  • Informal
9.1

Certain to happen

is modest confidence rather than a broad guaranteed claim

Antonyms

43 3.9

Not feeling sure or confident

25 3.0

Not sure about something and not ready to believe it

Idioms

104 1.3

To be completely sure and have no doubt

49 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

confident
715 2.5
certain
840 1.0
uncertain
43 3.9

Surface Forms

certain positive

Etymology

Certain comes from the Latin word certus, meaning 'decided' or 'fixed'. So when you feel certain, it is like having a decision inside you and you have no doubt about it.