In historical novels, an assassin's blade often appears.
Written forms
凶刃Usage81%
Standard modern spelling.
兇刃Usage19%
Variant using the older 兇 character; less common in modern writing.
Etymology
Compound of 凶 (bad, evil) and 刃 (blade). The exact historical derivation is uncertain, but the word is conventionally associated with a blade used for murder.