anticlimax
Concise Oxford English Dictionary © 2008 Oxford University Press:
anticlimax/antiˈklʌɪmaks/
▶noun a disappointing end to an exciting series of events.
– derivatives
anticlimactic adjective,
anticlimactically adverb.
anticlimactic adjective,
anticlimactically adverb.
'anticlimax' also found in these Oxford entries:

