cert
Latincertain, sure, determined, fixed
About This Root
From Latin certus (determined, fixed, certain), past participle of cernere (to sift, decide). The 'decided/settled' sense runs through all derivatives — certain (fixed, sure), certify (to make certain), certificate (document of certainty), certitude (state of being certain), and concert (acting in agreement, 'decided together'). Uncertain and incertitude negate the certainty.
Associated Words · 11
certain
(with "the") Something certain; Sure in one's mind, positive; absolutely confident in the truth of something; (with of) Unnamed or undescribed members (of)
certainly
In a way which is certain; with certainty
concert
A public musical performance; to plan together
uncertain
Not sure or definite; not yet decided
certificate
An official document certifying a fact or qualification; to issue such a document
certainty
The state of being completely sure; something that is definitely true
certification
The act of officially verifying something; a professional qualification
certify
To officially confirm or verify something in writing
certitude
A feeling of complete certainty or confidence
incertitude
Uncertainty or doubt; lack of confidence
concerted
Done together in a coordinated and determined way