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USA slang
Excellent, impressive, very good.
Safe to use?
Usually safest with people who already understand the context.
Tone
Usually positive or approving in casual contexts.
Region
USA
Formality
Informal.
Context Decoder
Check what it means in context, how it sounds and whether it is safe to use.
killer means Excellent, impressive, very good. It is best read as usa slang associated with USA.
"killer" means Excellent, impressive, very good. In USA, the nuance may be more specific.
Usually positive or approving in casual contexts.
Usually safest with people who already understand the context.
Context-dependent
Excellent; very good.
An excellent song, especially one that is loud and suitable for dancing
Someone or something that is excellent, high-quality, or impressive
Excellent, fantastic (dated, but still understood).
Delicious, amazing, really good (often food).
Certified; genuine or truly excellent.
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SlangWatch entries are maintained by the SlangWatch Editorial Team using submitted examples, regional labels, tags, and ongoing reader corrections. We avoid claiming a precise origin or cultural pathway unless the entry has meaningful supporting data.