classified
adjective
[ ˈklasɪfʌɪd ]
• arranged in classes or categories.
• "a classified catalogue of books"
• (of information or documents) designated as officially secret and accessible only to authorized people.
• "classified information on nuclear experiments"
classified
noun
• small advertisements placed in a newspaper and organized in categories.
classify
verb
• arrange (a group of people or things) in classes or categories according to shared qualities or characteristics.
• "mountain peaks are classified according to their shape"
• designate (documents or information) as officially secret.
• "government officials classified 6.3 million documents in 1992"
Origin:
late 18th century: back-formation from classification, from French, from classe ‘class’, from Latin classis ‘division’.
