1) an event (a football match, concert etc) for which all tickets have been sold; a betrayal (sell-out)
2) (the serious crime of) betrayal of one's country or ruler (treason)
the act of deceiving or being deceived
misleading; being dishonest
the process, state, of exposing or being exposed (all senses)
uncovering; putting in view or danger
(an act of) disloyalty or being unfaithful, especially to a wife or husband
disloyalty to an obligation
the making known (of something secret or hidden); something surprising that is revealed
disclosure, telling
the act, result, of being treacherous
disloyalty, dishonesty