Negatively

Neg·a·tive·ly

Negatively

adv.
  1. In a negative manner; with or by denial.
  2. In the form of speech implying the absence of something; -- opposed to positively.
    I shall show what this image of God in man is, negatively, by showing wherein it does not consist, and positively, by showing wherein it does consist.

Phrases & Compounds
Negatively charged
having a charge of the kind of electricity called negative, as does the electron.