A2 — Elementaryadjective
certo
certain, sure; a certain (determiner)
Synonyms (≈ similar meaning)
sicuroindubbioindiscutibiledeterminato
Antonyms (≠ opposite meaning)
incertodubbiosovagoindeterminato
Usage note
As predicate: 'sono certo' = I am sure. As determiner before noun: 'un certo signore' = a certain gentleman. 'Sicuro' = safe OR certain. 'Indubbio' = undoubted (formal).
Example
"Sono certo che arriverà in tempo."
"I am certain that he will arrive on time."
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