DEADLOCK
deadlock, dead end, impasse, stalemate, standstill
(noun) a situation in which no progress can be made or no advancement is possible; “reached an impasse on the negotiations”
Source: WordNet® 3.1
Etymology
Noun
deadlock (countable and uncountable, plural deadlocks)
A standstill resulting from the opposition of two evenly matched forces; a stalemate or impasse
(computing) An inability to continue due to two programs or devices each requiring a response from the other before completing an operation.
Verb
deadlock (third-person singular simple present deadlocks, present participle deadlocking, simple past and past participle deadlocked)
To cause or to come to a deadlock.
Source: Wiktionary
Dead"lock`, n.
1. A lock which is not self-latching, but requires a key to throw the
bolt forward.
2. A counteraction of things, which produces an entire stoppage; a
complete obstruction of action.
Things are at a deadlock. London Times.
The Board is much more likely to be at a deadlock of two to two. The
Century.
Source: Webster’s Unabridged Dictionary 1913 Edition