falling-off
noun /ˌfɔːlɪŋ ˈɒf/
/ˌfɔːlɪŋ ˈɔːf/
(British English) (also fall-off British and North American English)
[singular]- falling-off (in something) a reduction in the number, amount or quality of somethingTopics Change, cause and effectc2