死しんでも

adverb

even if I die; at the risk of one's life; even if it kills me

Literal or emphatic: expresses that one will do something even if it costs one's life. Often used in dramatic or determined statements.

• 死しんでも秘ひ密みつは守まもる。

  I'll protect the secret even if it kills me.

• 死しんでも彼かの女じょを離はなさない。

  I won't let her go even if I die.

adverb

at all costs; no matter what; definitely

Hyperbolic adverbial use: strongly emphasizes determination or refusal, often without literal risk of death. Common in everyday speech.

• 死しんでも謝あやまらない。