eventerate

Likely a "relatinized" calque of French éventrer, from Latin ē(x)- (“out”) +‎ Latin venter (“belly”, ventr- in compounds) +‎ -ate (verb-forming suffix); this should have given *eventrate, compare its obsolete doublet eventrate and orienate.

eventerate (third-person singular simple present eventerates, present participle eventerating, simple past and past participle eventerated)

1. (obsolete, transitive) To rip open; to disembowel.

• eventration

• “eventerate”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.