su·per·charge / ˈsoōpərˌchärj/ • v. [tr.] fit or design (an internal combustion engine) with a supercharger: [as adj.] (supercharged) a supercharged 3.8-liter V6. ∎ [usu. as adj.] (supercharged) supply with extra energy or power: a supercharged computer. ∎ [as adj.] (supercharged) having powerful emotional overtones or associations: appeasement is one of those supercharged words, like terrorism and fascism.