Whanged is a somewhat obscure word that can mean to strike or slam something hard. If you're looking to add some variety to your writing or speech, there are a number of synonyms you could use to convey a similar meaning. Some possibilities might include words like slammed, banged, smacked, thumped, thwacked, pounded, or clobbered. Depending on the context, you could also consider words like crushed, flattened, pulverized, or thrashed. Of course, each synonym has its own nuances and connotations, so it's important to choose the word that best fits the exact meaning you're trying to convey.