the state of being certain.

something certain; an assured fact. ?

for or of a certainty

certainly; without a doubt

I suspect it, but I don't know it for a certainty.

noun

ambiguity , doubt , hesitation , questionableness , uncertainty , concept , idea , theory

noun

all sewn up , authoritativeness , belief , certitude , cinch , confidence , conviction , credence , definiteness , dogmatism , faith , firmness , indubitableness , inevitability , lock * , lockup * , open and shut case , positiveness , positivism , rain or shine , setup , shoo-in , staunchness , steadiness , stock , store , sure bet , surefire , sureness , sure thing * , surety , trust , validity , wrap-upnotes:certitude is a measure of a person\'s positive feeling about something; certainty is a measure of the degree to which a process or development may be realized , consequence , foregone conclusion , inevitable result , reality , suretynotes:certitude is a measure of a person\'s positive feeling about something; certainty is a measure of the degree to which a process or development may be realized , assurance , assuredness , sure thing , actuality , fact , foregone , truth