Fromgut +‎foundered, fromfounder etymology 3.

gutfoundered (comparativemoregutfoundered,superlativemostgutfoundered)

1. (archaic)Extremelyhungry.

• [Francis] Grose [et al.] (1811) “Gutfoundered”, inLexicon Balatronicum. A Dictionary of Buckish Slang, University Wit, and Pickpocket Eloquence. […], London:[…] C. Chappell, […],→OCLC.