/ ˈɑːftəmæθ; -mɑːθ; NAmE ˈæftərmæθ/ noun
[ usually sing. ] the situation that exists as a result of an important (and usually unpleasant) event, especially a war, an accident, etc. :
A lot of rebuilding took place in the aftermath of the war.
the assassination of the Prime Minister and its immediate aftermath
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WORD ORIGIN
late 15th cent. (in the farming sense of new grass growing after mowing): from the adjective after + dialect math mowing , of Germanic origin; related to German Mahd .