Definify.com
Webster 1913 Edition
Underdig
Unˊder-dig′
,Verb.
T.
To dig under or beneath; to undermine.
[Obs.]
Wyclif.
Definition 2024
underdig
underdig
English
Verb
underdig (third-person singular simple present underdigs, present participle underdigging, simple past and past participle underdug)