英和和英

a dead certainty

absolutely certain

the condition of being accurate

It is certain.

an absolute certainty

tried and true

a certainty

surely

without a doubt

unmistakably

without doubt

without fail or doubt

I'm dead sure.

the degree to which something is probable

in a very decided manner

to decide definitely

bet on a certainty

There is no doubt.

totally reliable

persuaded of

with considerable certainty

strictly in confidence

an annuity certain

be confident about something

an inspired guess

an absolute promise

unwavering confidence

a certain hope

to guess correctly

steady faith