murder [ˈmɚdɚ]

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¹ murder noun

• the crime of deliberately killing a person —often used before another noun
• something that is very difficult or unpleasant

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² murder verb

• to kill (a person) in a deliberate and unlawful way : to commit the murder of (someone) —sometimes used figuratively
• to spoil or ruin (something) : to perform (something) very badly
• to defeat (an opponent) very badly