classify

verb

1. arrange or order by classes or categories

   verb.cognition

   Examples

   How would you classify these pottery shards--are they prehistoric?

   Synonyms assort class separate sort sort out

   Source: WordNet 3.0

2. declare unavailable, as for security reasons

   verb.social

   Examples

   Classify these documents.

   Antonyms declassify

   Source: WordNet 3.0

3. assign to a class or kind

   verb.cognition

   Synonyms relegate

   Source: WordNet 3.0

4. To distribute into classes; to arrange according to a system; to arrange in sets according to some method founded on common properties or characters.

   verb

   Source: webster1913