- upheaval (n.)
[upheaval 词源字典]
- 1834 in reference to convulsions in society; 1836 in geology, from verb upheave (c. 1300, from up (adv.) + heave (v.)) + -al (2). Similarly formed verbs are Old Frisian upheva, Old High German ufhevan, German aufheben.[upheaval etymology, upheaval origin, 英语词源]