·- A contraction of is it.
I shall. York, W. Riding. Pronounced [Yst]. ...
A glossary of provincial and local words used in England by Francis Grose
·- A noun suffix denoting an agent, or doer, one who practices, a believer in; as, theorist, one who...
Webster's Dictionary of the English Language
indeed it is. N. ...
I woe is me! N. ...