sure

having or feeling no doubt or uncertainty; confident and assured

“felt certain of success”

“was sure (or certain) she had seen it”

“was very sure in his beliefs”

“sure of her friends”

exercising or taking care great enough to bring assurance

“be certain to disconnect the iron when you are through”

“be sure to lock the doors”

certain to occur; destined or inevitable

“he was certain to fail”

“his fate is certain”

“{'source': 'Benjamin Franklin', 'text': 'In this life nothing is certain but death and taxes'}”

“he faced certain death”

physically secure or dependable

“a sure footing”

“was on sure ground”

reliable in operation or effect

“a quick and certain remedy”

“a sure way to distinguish the two”

“wood dust is a sure sign of termites”

(of persons) worthy of trust or confidence

“a sure (or trusted) friend”

definitely or positively (‘sure’ is sometimes used informally for ‘surely’)

“the results are surely encouraging”

“she certainly is a hard worker”

“it's going to be a good day for sure”

“they are coming, for certain”