undercharge

• POS: Noun, Verb (usu participle), Verb (transitive)
• HYPHEN: un=der=charge

CIDE DICTIONARY

undercharge, v. t. 

•  To charge below or under; to charge less than is usual or suitable for; as, to undercharge goods or services.  [1913 Webster]
•  To put too small a charge into; as, to undercharge a gun.  [1913 Webster]

Undercharged mine (Mil.), a mine whose crater is not as wide at top as it is deep. W. P. Craighill.

undercharge, n. 

 A charge that is less than is usual or suitable.  [1913 Webster]

OXFORD DICTIONARY

undercharge, v.tr.
1 charge too little for (a thing) or to (a person).
2 give less than the proper charge to (a gun, an electric battery, etc.).