-shən ə l, -shnəl adjective
Etymology: un- (I) + exception + -al
1. : open to no objection : unexceptionable
only the unexceptional work of the aircraft and engine manufacturers … enabled the expedition to take place — World Today
2. : allowing no exception : unalterable
an ideal language, with unexceptional rules — E.W.Hall
3. : constituting no exception to the general rule : ordinary , commonplace
as unexceptional an incident as this must be in a doctor's career — New Republic