Definify.com
Webster 1913 Edition
Underdo
Unˊder-do′
,Verb.
 I.
 To do less than is requisite or proper; – opposed to 
overdo
. Grew.
 Unˊder-do′
,Verb.
 T.
 To do less thoroughly than is requisite; specifically, to cook insufficiently; 
as, to 
; – opposed to underdo 
the meatoverdo
. Webster 1828 Edition
Underdo
UNDERDO
, v.i.1.
  To act below one's abilities.2.
  To do less than is requisite.Definition 2025
underdo
underdo
English
Verb
underdo (third-person singular simple present underdoes, present participle underdoing, simple past underdid, past participle underdone)
- (transitive, obsolete) To put under, subject.
 - (transitive) To do something insufficiently; especially to undercook.
 - (intransitive) To act below one's abilities; do less than one can.
 - (intransitive) To do less than is requisite.