Sentence:  He declared his independence from a reviled status quo by <WSD>inveighing</WSD> in blunt and occasionally vulgar terms about “stupid” leaders weakening America. <!-- cf. http://www.nytimes.com/2016/02/10/us/politics/new-hampshire-primary.html --> 
Meaning of the word marked with <WSD> tags:  or occasionally (about), formerly also with (on), (at), (upon) To complain loudly, to give voice to one's censure or criticism (from 16th c.)