up ‧ heav ‧ al /ʌpˈhiːv ə l/ BrE AmE noun [uncountable and countable]
[ Date: 1800-1900 ; Origin: heave ]
a very big change that often causes problems:
political upheaval
Moving house is a major upheaval.
up ‧ heav ‧ al /ʌpˈhiːv ə l/ BrE AmE noun [uncountable and countable]
[ Date: 1800-1900 ; Origin: heave ]
a very big change that often causes problems:
political upheaval
Moving house is a major upheaval.
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012