Dubitative mood is an epistemic mood which signals a speaker’s reservation about the accuracy of his or her statement.
The Ojibwa suffix -tik expresses dubitative mood, as in the following construction:
Nida, Eugene A. 1949.Morphology: The descriptive analysis of words. Ann Arbor, MI: University of Michigan.
Bybee, Joan L. 1985.Morphology: A study of the relation between meaning and form. Amsterdam: John Benjamins.