This dictionary comprises very useful information for Spanish speakers at all levels and for foreigners who wish to improve their use of the Spanish language. This publication provides an authoritative listing of vacillations, unincorporated neologisms, deviations from standard morphology and syntax, and vulgarisms. In each of these matters the dictionary offers sensible advise, justified by explanations that help to shape the linguistic development of the inquirer. The documentation of anomalous uses in literary and journalistic texts are abundant and demonstrate a profound awareness of the tendencies in the Spanish language of our times.