Claim: Seppuku is unmetathesized.
Evidence: Seppuku -LRB- 切腹 , `` cutting -LSB- the -RSB- abdomen/belly '' , formal on reading of original Kanji -RRB- , sometimes metathesized as harakiri -LRB- 腹切り , `` abdomen/belly cutting '' -RRB- which is a native Japanese kun reading , is a form of Japanese ritual suicide by disembowelment.