incorpse has the recorded history: A rare Shakespearean coinage from in- ('into') + corpse, ultimately from Latin corpus ('body') via Old French cors. Morphologically, the prefixed shape matters: the initial element belongs to the recorded formation and helps explain the modern form's surface analysis. In present English, the verb sense is "to merge into one body; to incorporate (archaic)", so the historical development ends in a clearly identifiable modern dictionary use. The same base also appears in related forms such as corpse, corpus, incorporate, and corporeal. Its semantic neighborhood includes incorporate, merge, unite, and combine, which helps locate the modern sense without adding a separate etymological claim. The named historical forms include Latin corpus and Proto-Indo-European *krep-.