xunai UI*6 cmavo-compound

discursive: false-true question.

Example: xunai do djuno - 'Don't you know?'. Only negates the question rhetorically, and not the expected answer; go'i/ja'a/je'u still means "Yes, I know".

On grammatical class:

ju'opei (comp!)
attitudinal: certainty question.
ki'anai (comp!)
non-question: understanding of something said.
xunai (comp!)
discursive: false-true question.