(law enforcement) Abbreviation of unknown subject. of an investigation.

Abbreviation of unsubscribe.

Abbreviation of unsubscription. / Abbreviation of unsubscriber.

plural of unsub

simple past tense and past participle of unsub

Not subedited. / Not coated with a layer of adhering material. / (microscopy) Not layered with a coating that will help fix the sample in place.

present participle of unsub

(intransitive) To cancel a subscription, especially to an online service.

An unsubscription.

(archaic) Insubstantial.