- undercharge⇄noun 1. a charge or price less than is proper or fair.
2. an insufficient charge or load. - undercharge⇄undercharge, verb, -charged,-charging,noun.
- undercharge⇄v.t., v.i. 1. to charge (a person or persons) less than the established or a fair price; charge too little.
2. to undercharge a person or persons by (so much).
3. to load (a gun, shell, or area to be blasted) with an insufficient amount of e