Certainly; without doubt; doubtless; surely.
Firmly; securely.
Confident; undoubting; having no fear of being deceived or disappointed.
Certain of one's facts, position, or the like; fully persuaded; positive.
Certain to find or retain: with of: as, to be sure of success; to be sure of life or health.
Fit or worthy to be depended on; capable of producing a desired effect or of fulfilling requisite conditions; certain not to disappoint expectation; not liable to failure, loss, or change; unfailing; firm; stable; steady; secure; infallible.
Certain to be or happen; certain.
Undoubted; genuine; true.
Out of danger; secure; safe.
Engaged to marry; betrothed.
See to be sure, below.
To make fast by betrothal; betroth.
Synonyms and Certain, Positive, etc. See confident.
To assure; make certain.