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.
(..) Furthermore, I used my position of privilege within the Inner Party to pervert and betray the truth at all times and to suggest, wherever possible, that our traditional allies in Eastasia were, in fact, our deadly enemies... (Winston) April th . I think. To the past, or to the future, (..)1984 1984