Certain — synonyms, certain antonyms, definition

1. certain (a)

absolute accepted accurate actual airtight alert assured authentic believing candid carefree categorical clear cocksure confident confirmed constant convinced convincing credulous • • •

2. certain (Adjective)

sealed uncertain

certain (Adjective) — Definite but not specified or identified. ex. "set aside a certain sum each week" ex. "to a certain degree" ex. "certain breeds do not make good pets" ex. "certain members have not paid their dues" ex. "a certain popular teacher" ex. "a certain Mrs. Jones"

certain (Adjective) — Having or feeling no doubt or uncertainty; confident and assured. ex. "felt certain of success" ex. "was certain she had seen it"

certain (Adjective) — Established beyond doubt or question; definitely known. ex. "what is certain is that every effect must have a cause" ex. "it is certain that they were on the bus" ex. "his fate is certain" ex. "the date for the invasion is certain"

certain (Adjective) — Certain to occur; destined or inevitable. ex. "he was certain to fail" ex. "his fate is certain" ex. "In this life nothing is certain but death and taxes" ex. "he faced certain death"

certain (Adjective) — Established irrevocably. ex. "his fate is certain"

certain (Adjective) — Reliable in operation or effect. ex. "a quick and certain remedy"

certain (Adjective) — Exercising or taking care great enough to bring assurance. ex. "be certain to disconnect the iron when you are through"

assurance authority certainty confidence foregone conclusion self-assurance self-confidence sure thing sureness