1. mod. quiet and uneventful; boring. The day was totally dead.
2. mod. very tired. I went home from the office, dead as usual.
3. mod. dull; lifeless; flat. This meal is sort of dead because I am out of onions.
4. mod. no longer effective; no longer of any consequence. That guy is dead—out of power.
5. mod. [of an issue] no longer germane; no longer of any importance. Forget it! It’s a dead issue.