Cis

/sɪs/ prefix

Definition

on this side of; having gender identity matching birth sex

Etymology

Latin cis 'on this side of'

Kelly Says

Cis means 'this side' - like staying on your side of the river!

Ethical Language Guidance

Gender History

Cis/trans are neutral chemical/linguistic descriptors (Latin cis-/trans- = 'this side of'/'across'). However, cisnormativity—treating cis identity as default/unmarked—erases trans experience. The bias is not in 'cis' but in its omission from visibility.

Inclusive Usage

Use 'cis' explicitly when discussing gender. Normalize 'cis' and 'trans' as parallel, equally specified categories. Avoid default language like 'real women' or 'biological women' that imply cis-only validity.

Empowerment Note

Trans people fought for and articulated 'trans' identity; linguistic visibility of both 'cis' and 'trans' honors that agency and resists cisnormativity.

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