ba Sense 1 particle English. General question marking particle (occurs after existential or verb, before topic marking particle). Sense 2 English. Rhetorical question marker. Example sentence: Subanen. Pinenggi' pekpanaw ita diag dalan, misuun ta ba masi' duun ig bunselagan pegapa' dia gunaan ta? Nda'. English. Suppose we are walking along the trail, do we already know that Intj. there's going to be a large cobra ahead of us? No.