Adjective
Excellently.
Usage- Colloquial
- Examples
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More examples (1)
After I'd outlined seven action steps to winning Nationals (practice like mortals, write a killer routine, fund-raise the application fee, get Coach Gertie to send in the forms, create team unity, get entire team focused on winning, perform a killerly perfect routine to wow the judges), I really got into the swing of the ugliest talking todo list.