Definify.com
Webster 1913 Edition
Underturn
Unˊder-turn
,Verb.
T.
To turn upside down; to subvert; to upset.
[Obs.]
Wyclif.
Definition 2024
underturn
underturn
English
Verb
underturn (third-person singular simple present underturns, present participle underturning, simple past and past participle underturned)