adjective
- causing or able to cause death
- extremely boring or dull
- very accurate or effective
Usage: informal
adverb
- extremely; very
Usage: informal
Examples
- The snake’s bite was deadly.
- Carbon monoxide is a deadly gas.
- The lecture was deadly boring.
- She was a deadly accurate shooter.
- His aim with the bow was deadly.
- The party was deadly dull.
- It was deadly quiet in the library.
- The archer had deadly precision.