He's 'deadly' [='dead'] serious about finding another job.
Officers are allowed to use 'deadly force' if necessary.
The two gang leaders are 'deadly' enemies.
(..) No, it ain't, kid. But somebody's gotta make sure that this company has a future. Imagine... that one, a fraction of the size... deadly... intelligent... able to hide from the most advanced military technology. A living weapon unlike anything we've ever seen. (..)2015 Jurassic World