This noun is formed by combining dead and lock; Dead, in this case means ‘absolute’ or ‘utter’, and lock means unable to move. So, deadlock means the situation when something is totally unable to move. In football, it describes the situation when two teams are evenly matched and neither can score a goal to give them an advantage – the score is stuck at 0-0. It can also be used as an adjective, to be deadlocked.
- Example:The teams were deadlocked at 0-0 after a tense Championship play-off final before Christopher Schindler scored the decisive spot-kick for the club (Huddersfield). (The Guardian Online)