dubersome

Adjective

 * 1)  Doubtful.
 * 2) * 1830, F. Shoberl, Forget Me Not; a Christmas, New Years, and Birthday Present, reprinted in The Literary gazette: A weekly journal of literature, science, and the fine arts (1835), page 692:
 * But he looked rather dubersome, and I thought he was only meaning to sham me off, and I felt hurt at it, Jem; for he had offered fairly, and I took his offer freely.