The verb "neatens" refers to the action of making something tidy or organized. There are several synonyms that can be used in place of "neatens" to convey the same meaning. These include "tidies," "straightens," "organizes," "arranges," and "cleans up." Each of these words can be used interchangeably depending on the context of the sentence. For example, one might say "I need to tidy up the living room," or "Please arrange the books on the shelf in alphabetical order." No matter which synonym is used, the ultimate goal remains the same - to make something neat and orderly.