-cert-
What do the words containing the root -cert- in the following sentences mean?
I am certain that he is mistaken.
I certify that this is correct.
Please send a certified check to pay that invoice.
We need a copy of your birth certificate.
Please ascertain the whereabouts of the suspect on June 3.
The root -cert- comes from the Latin word cernere, which means "to determine." Used in English derivatives, the root means "sure" or "confident."
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