vocabulariumEtymologyFrom Latin vocābulārium. Doublet of vocabulary.nounVocabulary.“I therefore want to know if a captain of volunteers is justified in applying to his superior officer language unbecoming an officer and a gentleman? If he is, then I would suggest that a regulation vocabulary should be served out to the whole force, so that officers and men may know the class of language an officer may be justified in applying to those of superior or inferior rank to himself. This”