Middle English, from Latin dispellere, from dis- + pellere to drive, beat
verb
to drive away or cause to vanish by or as if by scattering : dissipate
dispel a rumor
scatterdispersedissipatedispel mean to cause to separate or break up. scatter implies a force that drives parts or units irregularly in many directions. disperse implies a wider separation and a complete breaking up of a mass or group.