Q: What exceptional words turn into other words by both insertion and deletion of letters?

A

longest word both charitable and hospitable

AMY: AM,AY,MY;GAMY,ARMY,AMOY,AMYL

shortest word both stingy and hostile TUX (3)

**** Unless noted otherwise, all words occur in Webster's Third New International Dictionary, Merriam-Webster, Springfield, MA, 1961.

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