This article provides an analysis of verum marking in the Tsimshianic language Gitksan. Original fieldwork data are provided to show that Gitksan verum is very similar in its distribution and discourse effects to English verum, but displays two interesting differences. First, Gitksan verum is not marked by focal stress, but by a dedicated particle (k'ap). Second, Gitksan verum does not require givenness of the core propositional material. I argue that when applied to a proposition p, k'ap is (a) disallowed discourse-initially or in answer to a wh-question; (b) felicitous when responding to a prior assertion or implication of ¬p; and (c) felicitous in other contexts only if there is prior controversy in the discourse about the truth of p. I show that the semantic contribution of the Gitksan verum particle can be captured by a discourse management analysis: verum(p) is licensed only when the speaker believes that some interlocutor is committed to ¬p.
