stop dead (in your tracks) (=completely and suddenly):
Rachel stopped dead in her tracks when she saw me with Andy.
be dead (set) against (doing) something (=oppose it completely):
My parents are dead against the idea of me going to South America.
be dead set on (doing) something (=be determined to do something despite opposition):
The director is dead set on this location.
dead on time (=at exactly the time arranged or expected):
The package arrived dead on time.
Synonyms and related words