Another influence on speech style that is tied to social identity derives from register. A register is a conventional way of using language that is appropriate in a specific context, which may be identified as situational (e.g. in church), occupational (e.g. among lawyers) or topical (e.g. talking about language). We can recognize specific features that occur in the religious register (Ye shall be blessed by Him in times of tribulation), the legal register (The plaintiff is ready to take the witness stand) and even the linguistics register (In the morphology of this dialect there are fewer inflectional suffixes).

One of the defining features of a register is the use of jargon, which is special technical vocabulary (e.g. plaintiff, suffix) associated with a specific area of work or interest. In social terms, jargon helps to create and maintain connections among those who see themselves as “insiders” in some way and to exclude “outsiders.” This exclusive effect of specialized jargon, as in the medical register (e.g. Zanoxyn is a nonsteroidal anti-inflammatory drug for arthritis, bursitis and tendonitis), often leads to complaints about what may seem like “jargonitis.”