the state of being certain.
something certain; an assured fact.
for / of a certainty, certainly; without a doubt:
I suspect it, but I don’t know it for a certainty.
noun (pl) -ties
the condition of being certain
something established as certain or inevitable
for a certainty, without doubt
c.1300, certeynte, “surety, pledge,” from Anglo-French certeinté (late 13c.), Old French certainete “certainty,” from Latin or Vulgar Latin *certanitatem (source of Old Spanish certanedad); see certain. Meaning “that which is certain” is attested from early 14c.; meaning “quality of being certain” is from mid-14c.
abbreviation (in Britain) Certificate in Education
certainly; in truth. adverb (archaic) with certainty; truly adv. mid-13c., from Old French certes, from Vulgar Latin certas, from Latin certe, adverb from certus (see certain).
certificate. certificated. certificate certificated
capable of being certified. legally committable to a mental institution. Sometimes Facetious. fit or ready for an insane asylum. uncontrollable; insane: a certifiable desire. adjective capable of being certified fit to be certified as insane adj. 1846, from certify + -able. Meaning “so deranged as to be certifiably insane” is recorded from 1912. certifiable cer·ti·fi·a·ble […]