unsub

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unsub (plural unsubs)

1. (law enforcement) Abbreviation of unknown subject. of an investigation.
   • 2002, Brett Martinez, Multiple Fire Setters: The Process of Tracking and Identification, page 110:

     Further analysis may identify that the unsub has no specific schedule and has been escalating in the type of fire activity he or she is involved in.

   • 2011, Brent E. Turvey, Criminal Profiling: An Introduction to Behavioral Evidence Analysis, page 639:

     In short, UNSUB profiling is premised on two fundamental assumptions: (1) behavioral uniformity across offenses and (2) steady associations between configurations of offense behaviors and background characteristics.

• UNSUB

unsub (third-person singular simple present unsubs, present participle unsubbing, simple past and past participle unsubbed)

1. Abbreviation of unsubscribe.

• Unsub entry on the Free Dictionary.